The Natural Home Building Source
The Natural Home Building Source
The Natural Home Building Source

Sun-Mar Excel model self-contained waterless composting toilet system installation tips and operation guidelines

Sun-Mar self-contained waterless composting toilets offer an economical and ecological solution for replacing an incinerating toilet, chemical porta-potty, or outdated outhouse. Composting toilets provide a practical alternative for homes and businesses that suffer from lack of water, difficult topography, low percolation rate, high groundwater, inadequate lot size, or simply an environmental conscience. Composting toilets are an odorless, waterless composter toilet alternative to installing a conventional septic tank, smelly vault privy, or worse yet, a portapotty portable chemical toilet or outhouse. All composters vent constantly to refresh the oxygen/air, promoting biological activity within the compost pile. While it may not be necessary to have an electric fan assist the ventilation of your composter, it is highly recommended, especially in a full-time residential situation and/or where the chance of vent pipe down-drafts may be more commonplace. What noticeable composting odor exists within the composter, is prevented from escaping the waterless toilet fixture by an in-line fan (or passive non-electric venting) which creates a positive draft, aerating the compost before exiting above the roof line. The key to a composting toilet's odor-free operation, is the type of bacteria involved in the decomposition of toilet waste. Aerobic (composting) bacteria thrives in an oxygen rich environment. Anaerobic (septic) bacteria grows in an oxygen deprived environment (pools of water and/or urine). Anaerobic bacteria found in septic tank, portapotty, outhouse, or an unflushed toilet develops that unmistakable methane and ammonia 'septic' odor, but aerobic bacteria found in composting toilets has a more earthy, fresh tilled garden soil aroma. Excrement does not turn into a rose when it hits the composter bin, but it won't be allowed to go septic and smell any worse than it already does. Tumbling the bin a few times a week mixes the fresh fecal matter with active compost to minimize odor through aerobic decomposition. There is an informative FoxNews article posted online along with numerous other Sun-mar articles to read at the manufacturer's website.

$75 off Sun-Mar for a limited time!

Sun-Mar Excel composter... at 33 inches deep and 22-1/2 inches wide, is a natural choice for adding a dry toilet to your workshop, barn, or cabin, with no basement required. All three Excel series composting toilets can be set directly on the floor. Installation is limited to cutting a hole in the roof for the vent pipe and connecting the emergency over flow hose to a small drywell or holding tank. Excel 'AC model' plugs into standard household outlet to power up the fan and evaporative heating mat. Best feature of high-capacity Excel model is its VERY convenient tray for removing finished compost material. Other brands are more difficult to properly maintain, with way too many moving parts and metal components certain to eventually fail. Excel series has always been the highest capacity self-contained composting toilet, ensuring longer retention time for much less frequent and more pleasant maintenance.

Excel Installation Manual

Dimensions & Specifications

NSF standard #41 certified

Our Sun-Mar composter kits include...
large bag of Compost Sure, starter packet of Microbe Mix, vent pipe couplers and fittings with unique draft improving vent cap diffuser. Everything needed for the average building except roof flashing for the vent pipe exit and overflow pipe and hose clamps.

Sun-Mar total delivered price is listed
FREE shipping & NO sales tax except Colorado
price includes motor freight carrier street-side-drop
manufacturer direct shipment, usually within a week
no Hawaii, Alaska, Puerto Rico, Virgin Isles, Mexico or Canada

Sun-Mar Excel AC is $2010 $1935
Excel AC composter WITH plug-in internal blower
and evaporative heating mat in the base

Select Color and options:

Sun-Mar Excel AC/DC is $2150 $2075
Excel AC composter PLUS Sun-Mar's AC/DC
installation kit - see details below on parts

Select Color and options:

Sun-Mar Excel NE is $1880 $1805
Excel NE Non-Electric identical composter WITHOUT
internal blower or evaporative heating mat

Select Color and options:

3% cash discount for payment other than credit card: bank wire transfer, cashier's check, or US Postal money order
Please Email with name, address, telephone and model and color for a discounted invoice

SunMar Excel model composting toilet Sun-Mar Excel toilet composter

SunMar Excel AC electric model... currently $2010 $1935 delivered comes with 110 volt AC fan built right into its sleek fiberglass chassis. A low power usage carbon fiber evaporative heating mat (no moving parts to fail) is part of the base and is outfitted with a thermostat to help speed composting and liquid evaporation. These NSF standard #41 certified units were tested for six continuous months at their maximum residential capacity of four adults. They passed with flying colors, meeting all applicable health codes for installation in residential or light commercial situations. The fan is very quiet and easy to unplug when you wish to shut off, but we can install an optional speed control shut-off switch for $40. Please note that it may slow production and shipment by a week or two, as these switches are installed by hand at the factory, not in advance. We do not sell these switches for installation after-market, but you can obtain directly from Sun-Mar. All of our Sun-Mar composter kits include starter bed material, compost accelerant packet, vent pipe, couplers, fittings, and draft improving vent cap diffuser fitting. Client supplies the liquid overflow hose, hose clamp, and roof flashing for the vent pipe.

SunMar Excel AC/DC electric... currently $2150 $2075 delivered is an Excel AC model composter PLUS Sun-Mar's AC/DC installation kit. The $140 AC/DC installation kit converts an electric Excel AC, with 2 inch powered vent, for use without electricity or where only 12 volt DC is available. For non-electric (or 12VDC) powered venting a 4" vent stack is installed along with a 1" diameter drain assembly (not included). Excess liquids are not evaporated by the evaporative heating mat, as they are in the Excel AC, so there will be overflow liquid. AC/DC Kit includes a hole saw for cutting your own 4-1/4" top vent hole AND 5 X 4" X 31" Vent Pipe and 4 X 4" ABS Couplings and 1 X 4.25" Hole Saw and 1 X 6" Diffusor and 1 X Microbe Mix 50g. and 1 X 12 Volt 2.4 Watt Fan and 1 X Compost Quick 250ml and 1 X 4" Inlet Pipe and 1 X 1" SS Hose Clamp and 1 X 1" X 8' 4" Drain Pipe and a 1 X Clear Scoop to boot. Certainly all of these parts are readily available locally, but it is a handy time-saving kit provided by Sun-Mar to allow conversion of an Excel AC to function non-electrically or with 12 volt DC fan. Note that if you intend to run the composter on 12 volt DC power, never 110 volt AC, you would be advised to just buy an Excel NE with optional 12 volt DC fan assembly and save $230.

SunMar Excel NE Non-Electric... currently $1880 $1805 delivered lacks all electrical features found on the AC model: the recirculating-cabinet exhaust fan and evaporative heating mat. There is a 4 inch vent pipe rising straight out the top, rear of unit - larger diameter for better drafting airflow when installed without a fan. Under ideal circumstances, it is possible to install a composter without an in-line booster fan. For best natural drafting, vent the unit directly up through the roof and insulate the four inch vent pipe after it passes from heated bathroom. In other words: be sure to insulate your vent pipe running through attic and above your roof line to help prevent thermal down-drafting (rising warm air being cooled and dropping). All of our Sun-Mar composter kits include starter bed material, compost accelerant packet, vent pipe, couplers, fittings, and draft improving vent cap diffuser fitting. Client supplies the liquid overflow hose, hose clamp, and roof flashing for the vent pipe. Should you wish to add a blower for improved venting, an optional 12 volt 2.4 watt DC in-line fan is available at time of composter purchase for $40. We do not sell these 12VDC in-line fans for installation after-market, but you can obtain them directly from Sun-Mar. Or build a better 12VDC in-line exhaust blower yourself using a 4 inch diameter pipe coupler and an 80mm computer axial fan, as powerful as you wish.

SunMar Compact and SunMar SpaceSaver models... are not advertised for sale. SunMar Excel series has nearly double the composting bio-drum capacity and better internal configuration for less frequent maintenance requirements. Compact model is five inches shorter and about $75 less expensive than the Excel AC, but the much smaller bio-drum is not recommended for full-time use. Excel model is the SAME depth at 33 inches and only one inch more in width at 22-1/2 versus 21-1/2 for the Compact ( see specifications). You sacrifice a lot of functionality with the Compact just to avoid the aesthetics of a step in front. SpaceSaver model has a smaller footprint at 23 inch depth by 19-1/2 width, but it is extremely rare to see toilet cubicles less than 24 inches wide. Building code traditionally requires a minimum 30 inch toilet clearance. Recommend installing the Excel series whenever possible, rather than their Compact or SpaceSaver models.

Microbe Mix for compost accelerant in SunMar toilets

Sun-Mar Microbe Mix with dried aerobic microbes and select enzymes to help speed composting.
Add one tablespoon to compost every couple of weeks and then rotate drum several times. The 17.6 ounce jar should last about one year at that rate. Free shipping via USPS Priority Mail (no international orders) for $25 each.

$25 each
FREE shipping
USPS Priority Mail

Add to Cart

Sun-Mar Compost Sure bulking material is a mixture of sphagnum peat moss and shredded hemp stalk that we do not sell, due to prohibitively expensive shipping on such large bags. The Good News is you can make your own with local materials much cheaper and more ecological. Ranch supply and most feed stores sell 3.6 cubic foot compressed bales of pine planer shaving for less than $10. Before compressing into a bale, that amounts to almost 10 cubic foot, which is more than you can use in a year. Shavings, never sawdust, and pine is best, not hardwood, cedar, redwood, or treated wood shavings that would harm the compost. Mix planer shavings 60/40 up to 80/20 with sphagnum peat moss, with many full-time high-usage clients using 100% pine planer shavings. Peat moss can always be added separately in bulk should compost become too dry and you need to retain more moisture to encourage composting. Keeping the compost light and aerated with more shavings reduces the chance of sodden compost having an offensive septic odor. If the compost is "clumping" then you have likely not added bulking material after every bowel movement and/or are using too much peat moss.

Sun-Mar composter installation, maintenance, and operational highlights

Attaching the liquid overflow hose directly to an exterior drainfield is recommended with every composter, even the Excel AC units equipped with evaporative heating mats. If a drain pit is not initially possible, a collection container in the crawlspace or outside the wall is an option. A red gas can (to encourage people to respect it) with the overflow hose leading into its spout is very common. Local health codes naturally dictate, but always empty collected liquid effluent into a septic system, city sewer, camper toilet dumping area or similarly approved human waste disposal site. Be very careful when handling and always use the same precautions as those taken with any other type of human septic waste.

Emergency overflow hose on Sun-mar composters

Always leave at least one pipe joint in the vent at rear/top of composter unglued to allow moving the unit later without having to cut the pipe. A straight vertical vent pipe up through peak of roof is always best. When you are forced to install closer to eave roof overhang (outside wall) it is better to run two 45 fittings (example #3 below) and terminate vent pipe closer to roof peak. Example #5 should be reserved for warm climate installations only. Always insulate all exterior and uninsulated attic vent pipe runs to ensure proper drafting, especially in cooler climates.

Standard venting designs for Sun-mar composting toilets

Our SunMar kits include all the pipe and fittings you will need for the average installation except the hose for liquid overflow, which is one inch inside dimension on most models and the roof flashing for vent pipe. Four inch diameter vent is common SDR35 sewer-drain pipe should you need extra or desire a straight-run versus coupling together the sections supplied with kit. Their two inch vent pipe is outside dimension common to in-house vacuum systems or you can use two inch Sch40 and a rubber 'boot' coupler. You will need a saw for cutting pipe and a hole in the roof, bit for drilling overflow hose hole in floor/wall, nails and roofing cement for reapplying shingles, silicone or butyl caulk for sealing flashing over roof hole, PVC cement and primer for vent pipe, screwdrivers and hammer. As with any project... take a dry run at installation first, but it is fairly straight-forward for a handyperson.

Always insulate the floor underneath self-contained composters - retaining heat inside the unit will help maintain efficiency of the natural composting action. If you install on a concrete floor, you must at least place a layer of foam insulation, or better yet, an insulated three foot by six foot platform built of 2by4 wood to act as a solid thermal break. Be sure to install the unit on a flat surface or slightly tilted towards the rear, never sloping to the front. When it is not possible to install in a heated bathroom, one should at least insulate the room and hopefully provide some direct sunlight warmth. Skylights are a nice addition to any composting toilet room design. SunMar composters are a good choice for locations where the toilet is not used for months at a time and/or allowed to freeze during the winter months. Compost will just go dormant when frozen or dried out and is easily 'restarted' with a good soaking of warm water.

Always install the emergency overflow hose on back of composter body - whether to a containment vault or tank, or a leach pit drywell, as per installation plans. Even if the unit is capable of evaporating all liquid, you should always install an emergency overflow because you just never know. Note that only the 110 volt AC powered units are equipped with evaporative heating mats in the base. The non-electric version of the Excel NE does not have any means to evaporate excess liquid so it must flow out the overflow hose when it accumulates past a certain point. Whenever you remove the finish material tray, always use the provided rake to pull any debris underneath to the front, so it cannot clog your outlet overflow holes.

Start the composting toilet 'bed' with 2 parts peat moss mixture and 1 part rich topsoil. Moisten well, and in the beginning, keep towards the front 2/3 of tumbler bin bottom away from the screen in back. Until the starter bed mixture develops into mature compost, fragments of soil and peat may slip through screen in back, especially when not kept moist. In any case, few solids will accumulate and they are not necessary to remove, but you can with enclosed rake. A note on topsoil mixture: it needs to be insect egg free, so seal it in a black plastic garbage bag, moisten well, and leave in direct sunlight for a couple of days to bake. Turn and shake the bag once or twice a day to ensure direct and even heating of the soil.

Good healthy, active compost takes a few weeks to get properly started - be patient and give it time to mature. Composting action stops if the pile is allowed to dry out completely, so monitor and tumble to moisten thoroughly, adding warm water when need be. If the compost is way too moist, it will eventually turn into pudding because not enough bulking material is being added and oxygen cannot penetrate the pile. Before compost ever reaches that point though, you should notice an offensive septic ammonia odor. If this happens, add a gallon or more of pine planer shavings and tumble well to help dry it out and allow air back into pile. Compost accelerant Microbe Mix should be periodically added to ensure optimal composting. And adding a couple slices of dry bread, not moldy, a couple of times a month is a natural compost accelerant.

Add a quarter to half cup of bulking material per bowel movement - best practice is to toss your toilet paper to rear/front of tumbler so excrement can be covered with a handful of pine planer shavings. Key to good compost is adding bulking material regularly, so the fecal matter layers-in with plenty of air pockets that breathe trapped air inside the pile. Place a small wastebasket full of bulking material atop the unit to ensure it is regularly added. There is no need to tumble the drum after every bowel movement. Excessive tumbling will actually hinder the composting action by compacting the material and driving out air.

Tumble the compost thoroughly every other day or at least twice a week - rotate the bio-drum three full, complete rotations, noting that it takes six revolutions of the handle to make one full drum rotation. There is no need to tumble the drum after every bowel movement. Excessive tumbling will actually hinder the composting action by compacting the material and driving out air. Routine tumbling ensures loose, moist, and evenly distributed compost. Failure to regularly tumble can lead to clumping and poor overall compost health due to dry, packed air-less conditions. Clumps in the compost allows urine to pass through much too quickly, resulting in excess liquid effluent in the base. Whenever you remove the finish material tray, always use the provided rake to pull any debris underneath to the front, so it cannot clog your outlet overflow holes.

Should you encounter completely oversaturated compost, the screen in lower rear of compost drum is likely clogged, preventing excess drainage into base. Rotate the composter drum handle three turns, so the bio-drum is upside down. Wear gloves and remove the toilet bowl liner and shine a flashlight into the top rear - you will see the stainless steel screen. This screen allows excess liquid to drain from compost down into the base of unit. When composter is not tumbled on a regular basis, the screen can cake with dried compost and get clogged. After covering your arm with plastic wrap, and while wearing gloves, you can reach into the unit and free the dried material on the screen. A large nail or hair brush with well-spaced stiff bristles can be forced down through the screen to free the openings and allow compost to drain normally.

Let the partially composted material in the finishing drawer sit undisturbed - for a couple of weeks and be totally dehydrated before removal and then immediately back-tumble a new load into the finishing drawer. Keep the bio-drum about 1/2 full for maximum moisture (and heat) retention and most carefree operation. When the flap in top of drum catches on compost after being tumbled, it is way, way too full. Always tumble the composter very well, four or five complete revolutions of the bin (not just the handle), before back-tumbling the next load into finishing drawer. You want to see fresh material thoroughly mixed with compost before depositing into drawer for final dehydrating. Check with local health codes, but finished compost can be added to an exterior compost pile for later tilling into ornamental plantings, or buried a foot underground near a tree or bush, or simply thrown in the landfill. Take proper health precautions when handling finished compost: the same rules apply as to septic tanks - avoid direct skin, mouth and eye contact. Whenever you remove the finish material tray, always use the provided rake to pull any debris underneath to the front, so it cannot clog your outlet overflow holes.

Healthy composting toilet material inside the drum is not an environment favorable to insect life - active, healthy, moist compost, being tumbled regularly is generally too hot and disturbed for insects to thrive. Discourage insects from taking up residence in the first place, by spraying with a mild insecticide atop the air intake screen on side of composter, under the removable toilet bowl, under seat and lid, and around the base at floor. Then lightly spray the edges of a heavy rug and throw it over the top, entirely covering the area around toilet seat. Rugs and quilts are very effective sealing tools, as are automatic closing screen doors on bathrooms.

Should you ever get a small fly infestation, kill them and then spray everything one more time for good measure. While prudent to avoid spraying the compost itself with harsh insecticides, there must at least be enough clinging to the outside of the barrel and inside of composter body to discourage return. Note that insects are not breeding and laying eggs in healthy compost; they are generally active outside the drum, somewhere inside the cabinet. Normally, one does not clean anything inside the composter cabinet, only periodically removing fully dehydrated compost from finishing drawer. Should you have an insect infestation that simply will not go away, it may need to be cleaned, though. This is a good time to remind everyone that toilet waste is hazardous septic human waste and must be approached with proper safety equipment and plenty of caution. Wear disposable protective clothes with full head/mouth covering, face shield and/or goggles, and protected sleeves and gloves. In a pinch, Saran wrap can be put around arms and then securely taped to the gloves. Start by removing the toilet bowl and cleaning any material clinging to side of drum or inside of cabinet. Spray all interior surfaces, soaking well with natural pyrethrins, or more powerful aerosol sprays, and "bomb" the composter for a day or two. For best results, turn off the fan and wrap/seal all openings with plastic stretch-wrap kitchen cling film. After you stop the infestation, spray the air intake areas, floor, and under toilet seat/bowl/lid/cover to discourage future visitors.

The liquid in the bottom of the composter will dehydrate with excess flowing out the back through the overflow hose. There is no need to try to remove liquid effluent in bottom of composter - do not mess with it - the extra humidity is helpful, if nothing else.
Should it not be evaporating, and the heating mat is functional, there is likely a skim-coat of oil atop the liquid preventing natural evaporation. Squirt a healthy amount of liquid dish soap/detergent atop the liquid in base to break up the oil coat and evaporation will get back on track. Also check to be sure the air intake vent grate(s) on body of composter are clean. Dust and debris can clog the air intakes, preventing cross draft from evaporating liquid properly. When you remove the finish drawer material, it is a good time to rake out any debris in base of composter. Under normal operating conditions, debris will not accumulate in the base, so try to keep it clear for best evaporation of excess liquid.

Venting directions for the Sun-Mar composter follow the same basic rules as any powered vent: a straight vertical pipe up through roof is always best practice. When you are forced to make bends, use two 45 degree fittings versus a single 90 degree bend whenever possible. Terminate the vent pipe above peak of roof for best drafting. If this requires bending vent with two 45 fittings inside attic, do so rather than have vent pipe exit lower on roof. Of special importance is to insulate the pipe as it leaves heated room (attic and above roof line) the kit comes complete with a section of foam and additional can be purchased at any home building supply store. A nice touch is to cut a section of four inch pipe to cover the foam insulated pipe as it leaves the roof for protection against sun damage.

Should you install the vent properly and still experience compost odor in the restroom, a few Sun-Mar composters are equipped with a "gate" on the blower assembly. Remove the #2 square drive screws holding the blower on rear of unit and adjust the gate to zero/closed setting and seal with duct tape If the blower does not have a gate, you may notice that the fan blower terminates about 1/2 inch away from where it exits the back. This opening is designed to circulate air inside cabinet for accelerating dehydration and can be duct taped closed to enhance venting. A fuzzy toilet seat cover also helps maintain tight seal and in a worst case scenario you can install an in-line booster fan anywhere in the vent pipe before it leaves the roof. Keep in mind that properly maintained compost will not have a septic odor... if it does, start with fixing the compost health first.

Sun-Mar manufacturer warranty and our terms of service agreement

Sun-Mar Corporation warrants the original purchaser that this toilet is free from defects in material and workmanship under normal house or cottage use. Sun-Mar will furnish new parts for any part that fails within three (3) years, and any fiberglass tank that fails within five (5) years, provided that our inspection shows that such failure is due to defective material or workmanship. Any part supplied by Sun-Mar to replace another part is warranted for the balance of the original warranty period. This manufacturer warranty does not cover: 1) Damage resulting from neglect, abuse, accident or alteration; or damage caused by fire, flood, acts of God or other casualty. 2) Parts and accessories not sold or manufactured by Sun-Mar or any damage resulting from the use of such items. 3) Damage or failure resulting from failure of the purchaser to follow normal operating procedures outlined in the Owner's Manual or in any other printed instructions. 4) Labor and services charges incurred in the removal and replacement of parts found defective under terms of this warranty. 5) All returns to the factory must be made freight prepaid. All shipments from the factory are made F.O.B. the factory. This warranty is in lieu of all other warranties expressed or implied, and no person is authorized to enlarge Sun-Mar warranty responsibility, which is limited to the terms of this certificate (registration card). Sun-Mar reserves the right to change, improve or modify its products without obligation to install these improvements on equipment previously manufactured. Distributors are not going to carry replacement parts, but you may contact Sun-Mar direct at 888-341-0782 or 905-332-1314 (9-4 EST M-F) or email to order parts. Be sure to have the unit's model and serial number available along with a copy of your original receipt so they can match unit with part number(s) needed and advise if unit is still under warranty. Emailing Sun-Mar first with an image of the damage and unit model and serial number and date of purchase will help expedite your inquiry. Please refer to our Terms of Service Agreement for complete product warranty, shipping, and return information.

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Gravel-less drywell leach pit kits are $169 each total delivered cost

Shown below is a sample installation with two drywells in series - bringing sewage in through the lid. Top loading (with vent) ensures maximum surge capacity for the drywell. Please note that venting your leaching pit (or any septic field) is most highly recommended... lack of venting at both ends of lateral lines is the ultimate cause of leach field failure (after lack of proper two compartment filtered septic tank). Oxygen keeps the drainage pit dry and the soil around it healthier. Freezing is rarely, if ever, a problem with running sewage water underground, but you can always cap the vents in deep winter, if need be. We provide all of the fittings pictured with your kit (san tee, riser, coupler, vent and geotextile fabric). The geotextile fabric is included for installation above the gravel layer. It keeps backfill soil from clogging the gravel and is crucial to extending the life of your leach pit.

One drywell is plumbed as seen on right-hand unit, with your four inch inlet pipe coming into side of kit's sanitary tee on the lid, with riser, coupler and vent grate on ground surface. Two drywell kits are installed as pictured, in-series for optimal leach pit longevity. In-series design allows first drywell to act as a sediment catch-basin, with surge overflow eventually cascading over into the second drywell lid. This is standard and best practice in poorly percolating soils.

Two drywells can be installed in a single leach pit (hole filled with gravel), but it's best practice to have two holes separated by at least six feet of undisturbed soil. Loosen 'scarify or till' soil at least one foot deeper than the base of leach pit. For optimal water percolation, you must avoid compacting 'smearing' soil in the hole's base and sides. While possible to install gravel-less, using the soil you just removed from hole for backfill, it always pays to install at least one or two feet of 3/4 to 1-1/2 inch gravel under and around them.

drywell kit design & installation

Two drywell kits installed in series

$169 Drywell kits come complete with soil fabric and installation fittings...
*  Free sanitary tee 3-way 4-inch pipe fitting brings liquid in through top of drywell lid
*  Free vent grate slotted green fitting with riser pipe and coupler to properly vent kit
*  Free geofabric 36 square foot for up to 6' by 6' hole prevents dirt & root infiltration
*  Free Shipping via UPS Ground only in the 48 contiguous United States of America

Drywell leach pit kit

Drywell Kit with Lid
24 inch diameter by 29 inch tall
Three side panels, lid, 4" S/D inlet tee
green vent grate with riser & coupler
36 sq ft of geotextile soil filter fabric
$169*   Free UPS Ground

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Optional bottom panel for drywell

optional Bottom Panel
not used when disposing of water
Primarily for sump pump installation
or when extra lid support is needed
NEVER drive cars over drywells
$35*  Not Sold Separately
ONLY sold with the drywell kit

Add to Cart
Additional three side for stacking drywells

extra Set of Side Panels
adds 24 inch height for stacking
Three side panels match drywell kit
for a 53 inch tall overall installation
$109*  Not Sold Separately
ONLY sold with the drywell kit

Add to Cart

optional heavy-duty surface drain

optional Surface Drain
heavy-duty 7" by 10" tall yard drain
Place in middle of patio or driveway
and run 4 inch Sch40 pipe to drywell
NEVER drive cars over drywells
$35*  Free UPS Ground

Add to Cart

we keep drywell kits in stock for quick shipment by the next business day

"Are we allowed to install this composting toilet system on our property" is not a question we can answer for you. But we sell only National Sanitation Foundation NSF standard #41 Sun-Mar composting toilets. This NSF Standard #41 certification is traditionally all your county building inspectors are concerned about confirming. Unfortunately, with over 3000 counties in the United States, regulations changing from year-to-year, and interpretations of those rules varying from one inspector to another, it's never possible to say for certain 'what is allowed' locally. The county building department is your primary source of information on what is possible to install according to local 'code'. Ski patrol huts, golf courses, trailheads, snackbars, barns, stables and a great many private homes and cabins throughout the world, in every climate, are satisfied customers. SunMar composters are perfect for locations where the toilet is not used for months at a time and/or allowed to freeze during the winter months. Compost will just go dormant when frozen or dried out and is easily 'restarted' with a good soaking of warm water. We've had two SunMar Excel installed on our home and one in the office warehouse for over 25 years now, so we are very familiar with the product and composting systems in general.

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Battery Operated Moisture Sensor Flood Alarm is $20
FREE US Mail Shipping - we keep units in stock for quick shipment by the next business day

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Battery powered flood alarm product detail page

Flood alarm moisture sensors are an integral part of many sustainable design systems and this one comes with a 5 year manufacturer replacement warranty! Sump pumps, cisterns, greywater tanks, greasetraps, and greywater filters alike can all benefit from this early warning overfill alarm. Washing machines, water heaters, pressure tanks and other household plumbing will leak, eventually. This flood alarm will let you know there's a problem with a piercing 110dB wail long before your couch starts to float away. This flood alarm's solid state circuitry is built into a 3 inch wide, 4.25 inch tall, and 1.5 inch deep sensor compartment. A single 9 volt battery powers the alarm and a battery saver feature keeps batteries fresh longer. Don't take chances with water damage. Protect yourself with a flood alarm. Read more here...

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Complete Client privacy and total security are primary concerns. We promise to never release Client information to anyone for any reason. This privacy policy extends to referral and reference requests. Rest assured, We will never give anyone your name and telephone number so they can call during dinner to ask about a product purchased from We promise you will never end up on a mailing list or get a sales call as a result of being one of Our Clients. secured server credit card processing service, that We have used for many years, has their own very strict privacy policy. is not given any access to credit card numbers during or after any shopping cart puchase made online with We reserve the right to refuse service to any potential Client at Our sole discretion without explanation.

Pricing and Payment

With the exception of the Servel gas refrigerators, only Colorado residents are responsible for paying state sales tax of 2.9%. You may be responsible for paying sales tax directly to your state revenue agency, but We do not collect sales tax outside of Colorado. We do not accept international credit cards, money orders or checks for payment and We do not ship into Canada or Mexico, Puerto Rico, Alaska, Hawaii or any off-shore or international destination. Merchandise advertised Free Shipping only applies to the 48 contiguous United States of America. Special Orders shipped outside the 48 contiguous states (HI, AK, PR, VI, Guam and APO/FPOs) require bank wire transfer payment (EFT) no other option, sorry. Will-call pickup at freight dock and drop shipments to a third party (receiver not being the credit card holder) are only possible with cashier check, US Postal money order or bank wire transfer EFT payment in advance. Email or fax 720-293-1705 with full shipping address and order details for a personal quote and payment invoice. Once invoice is completed, We can accept VISA and MasterCard orders online for fastest service or by phone at 800-563-9720, fax at 720-293-1705, email at Cashier's check, wire or US postal money order is recommended since they are treated as cash and orders ship immediately. Prices are subject to change without notice and do not include any applicable taxes (Colorado residents ONLY). On government and corporate accounts invoiced with payment due 'net thirty', the total amount must be received no later than thirty days after invoice date, not the Merchandise delivery date. Late payments are subject to a 2% monthly finance charge accrued from date of invoice. Package and individual Merchandise parts, components and product specifications are subject to change without notice. Special order items are bid on a case by case basis and quotes are generally good for thirty days unless otherwise notified. Price matching offers are only applicable before purchase is made, not after payment has been submitted for Merchandise. We offer only to price match advertised delivered cost for Kobe Range Hoods that ship via Fed-Ex Ground, not motor freight shipments on a pallet. We offer only to price match authorized Kobe dealers. Internet 'marketplaces' and auction sites commonly feature unscrupulous 'surplus Merchandise' retailers selling used, returns, and repackaged 'demo' units without proper disclosure. Unauthorized dealer surplus Merchandise is NOT covered under Kobe's manufacturer warranty and may well have hidden defects the surplus retailer will not cover. has long been an authorized dealer for Kobe Premium Series range hoods and We sell only brand new, factory-direct, fully warranted appliances.

Free 48 State Delivery

All shopping cart items are advertised as Free Shipping with no extra charge for delivery. Shipping and handling fees are factored into advertised total delivered price. Note shipping is only available to the 48 contiguous United States of America. We do not ship into Canada or Mexico, Puerto Rico, Alaska, Hawaii, Virgin Isles, APO/FPO mailboxes, or any off-shore or international destination. Inventory 'stock' items will ship within 2-3 business days from one of Our warehouses. Scheduled deliveries are not possible to arrange, but We automatically email tracking information after shipment, so you can anticipate delivery date. Motor freight deliveries do not include lift gate service to lower boxes onto the roadway, unless quoted with additional services. If need be, lift gate service to lower boxes onto roadway is available for an additional $65 to $100 fee. Street-side motor freight deliveries are not brought to your front door by the driver, like UPS and Fed-Ex package services. Client must meet motor freight truck deliveries on the street to unload and inspect shipments by hand before signing for Merchandise. Shipments must be accepted promptly within three days of arrival at local freight terminal or storage fees of +/- $50 per day, per pallet may apply. Any and all storage fees billed by trucking company are the sole responsibility of Client and must be reimbursed to Our company.

Fed-Ex and UPS Ground

Most shopping cart items ship via Fed-Ex or UPS Ground package delivery service. Package delivery services, unlike a motor freight carrier (see next paragraph), will allow us to file a hidden damage in transit claim for insurance reimbursement, but We are given less than a week to report it. Regardless of how well the exterior of container box appears, you must ALWAYS have the driver note ANY damage to shipping boxes in writing before signing. Then immediately, always take Merchandise completely out of its packaging and inspect ALL of the Merchandise, notifying us immediately should there be ANY hidden damage to Merchandise. Mechanical problems are covered under the manufacturer warranty, but hidden aesthetic damages (cosmetic dings, dents, broken Welds, significant scratches, or popped rivets) you discover than a week after delivery are not reimbursed or replaced by Fed-EX, manufacturer, Kobe, or Not saying that you or your Merchant caused the damage to the unit before or during installation, but that possibility exists when Merchandise is not properly inspected upon arrival. Additionally, any appearance (non-mechanical) flaws found after installation will not be reimbursed or replaced by freight carrier, Fed-EX, manufacturer, Kobe, or Merchandise that has been installed is not eligible for return or replacement by

Motor Freight Shipping

Servel refrigerators, Sun-Mar composters, larger custom shade panels and larger Kobe range hoods ship via motor freight 'common carrier', as noted on the website and receipt. Scheduled deliveries are not possible to arrange, but We automatically email tracking information after shipment, so you can anticipate delivery date.Common carrier motor freight is shipped on a pallet with boxes covered in clear plastic stretch-wrap and is defined as street-side motor freight drop, which differs from small package services like UPS and Fed-Ex, in that the truck driver does not bring Merchandise into your building or onto the porch. Street-side motor freight drop is a basic delivery service, often in a full-size tractor trailer, where driver parks in street while you unload and inspect the Merchandise. Kobe range hoods, shade panels, and Sun-Mar composters are not shipped with lift-gate service. You must unload boxes from the tractor trailer by hand. If you require lift gate service to lower the Kobe range hood down onto the roadway, with what they call a mechanical 'Tommy lift', it is available for an additional $65 to $100 fee. Please arrange and pay for this optional service at time of order. Always check the number of pieces (boxes) present against the stated waybill shipping receipt tally. As with any motor freight shipment from any distributor, be certain to carefully examine ALL of the Merchandise, not just the outside of shipping box(es), before signing and accepting delivery. It is imperative with motor freight shipments that ALL products be unboxed and fully inspected PRIOR to accepting delivery. Regardless of what the delivery driver may say, you MUST inspect fully before signing and accepting the delivery. It is the freight truck driver's job to wait while you open and inspect shipment for damages. Simply looking at the outside of the box(es) is NOT adequate. Damaged Merchandise (that particular box, not all the boxes) must be refused delivery. Once someone signs for shipment, it confirms Merchandise was received free of ANY damage and removes liability from the transportation carrier. We can only assume that damage reported later and not refused delivery, was caused by the Client, and not the freight carrier. Any subsequent attempt to file a claim for loss or damage will NOT be accepted by the transportation carrier, distributor, or Our company,

Returns and Cancellation

All returns, cancellations and/or exchanges must first be authorized in writing by at Client may not ship any Merchandise back until We supply return Merchandise authorization RMA number and address for the shipment. Orders often do not ship back to the same warehouse they shipped from originally. Contact us with invoice number and reason for return or exchange to obtain an RMA number and instructions. No returns, refunds or exchanges will be authorized more than 30 days after original purchase payment date. Design consultation services, DVDs, knit shade material, water tubes, greywater and septic system parts are not returnable for refund or exchange for any reason. Once payment has been made, custom panel orders are cut and enter the production system and cannot be cancelled after payment is made. No return on any remnants or discontinued items. Any authorized returns of Merchandise must be in the original carton, in new unused condition, and returned freight prepaid to Our designated warehouse. Merchandise originally shipped via motor freight carrier on a pallet, may not be returned via package delivery service such as UPS or Fed-Ex. Original actual shipping cost will be deducted from any refund due along with up to 15% restocking fee on the Merchandise. This restocking fee includes the 3% credit card processing on original purchase, which is not refunded by MasterCard or VISA. Please understand that items on Our website are advertised as "Free Shipping", which is to be understood as "there is no extra charge for delivery of PURCHASED Merchandise". UPS, USPS, Fed-Ex and motor freight carriers charge us a fee for delivery of Merchandise, which We must recoup on returns. Kobe, for instance, bills a flat-fee of $40 and $45 for business and residential Fed-Ex shipments and $162 and $186 for motor freight carrier drops. Sun-Mar and Servel units ship via motor freight carrier for anywhere from $120 to $300+ per unit, depending upon zip code and drop site designation. Kobe, Sun-Mar, Clivus Multrum, Quanics, Dometic and Servel returns are manufacturer-direct, drop ship items and may be subject to an additional manufacturer's restocking fee. Discontinued, clearance items are not eligible for return or exchange. If an item is returned without original packaging intact, or is damaged, found to be used, or otherwise not ready for resale, it may be refused and returned to sender at their expense, so always insure shipment.

Lost and Stolen Shipments

Tracking information is emailed following shipment on all orders so client can anticipate delivery date. Custom size shade panels are made-to-order and can take up to ten business days to produce and ship. All other 'stock items' normally ship within three business days. Should you not receive email shipping information, please send a request for tracking number in writing to: Note it can take up to 48 hours for a given tracking number to appear on transportation company website. During this time, shipment status may be listed as "order processed and ready for pickup". Traditionally, this just means the shipment has not yet reached transportation company terminal and scanned after being unloaded from truck that picked those package(s) up. Overdue shipments must be reported to merchant in writing within one week after anticipated delivery date. Cardholder hereby agrees that only two possibilities exist for a shipment that did not arrive as anticipated. Possibility #1) Transportation company shows shipment as still being in-transit. In this case, merchant will file a 'tracer' request on behalf of cardholder with transportation company and they will search for box(es) at all company freight terminals. Cardholder is required to fully cooperate by filling out any forms requested, returning any voice messages left, and replying to any email messages sent by transportation company or merchant. Your patience and consideration is required and greatly appreciated while transportation company attempts to find the shipment. Replacement or refund is authorized solely at merchant discretion. Cardholder is not permitted to cancel order. Cardholder is not permitted to dictate choice of replacement or refund. And cardholder is not permitted to dictate time frame for settlement and ultimate delivery date for merchandise. Possibility #2) Transportation company shows shipment as being delivered. In this case, merchant will file a 'lost shipment' claim on behalf of cardholder with transportation company. A lost shipment claim can take up to two weeks to resolve and unfortunately, the transportation company rarely, if ever, pays the insurance claim. Ideally, we only ship to cardholder, personally, at their residence or business 'home' credit card billing address, but regardless of designated drop site and receiving person and whether or not a signature was required at time of delivery, cardholder is solely responsible for merchandise security after drop is confirmed by transportation company. After transportation company confirms delivery to shipping address, no signature required, there will be no refund or replacement for lost or stolen merchandise for any reason. Cardholder must immediately file a theft report with their local police department for item stolen from property or designated drop site. Cardholder hereby agrees to relinquish any and all right to file a credit card chargeback sales reversal for merchandise lost in transit by transportation company or merchandise reported lost or stolen after delivery is confirmed by transportation company. Should cardholder file a chargeback in violation of this terms of service agreement, cardholder will be held responsible for reimbursement of any and all merchant services processing fees incurred as a result of the frivolous chargeback, which can be anywhere from $35 up to several hundred dollars.

Shade Panel Production

Our commercial grade knitted shadecloth carries a one year manufacturer's replacement warranty against defects in material and workmanship. You can expect at least 5 years of service when installed properly and well over ten years when used seasonally in a temperate climate. Client must inspect shade panels within one week of delivery in order to be able to report any damages. Rips, tears, and aesthetic damage you find more than one week after delivery are not reimbursed or replaced by the freight carrier or Additionally, merchandise that has been installed is not eligible for return or replacement for damage claims. Fabric is knitted polyolefin, primarily high density polyethylene HDPE, specially treated for durability and UV resistance. Wind damage from loose panel whipping, snagging, and abrading against the structure or cable framework is much more harmful in the long run than simple exposure to sunlight. Knit shade material should be installed hung underneath, not pulled across the top of cable or framework, to avoid abrasion and snagging damage. Chemical, fire, heat, abrasion, and snagging damage are not covered under manufacturer warranty. Shade panel warranty inspection returns must be authorized in advance and returned freight prepaid to designated location for visual inspection. will only pay the cost to ship warranty repaired or replaced merchandise back to client after inspection confirms damage was a material or workmanship defect. The following are trade-standard, non-valid reasons for requesting warranty inspection: First, there is no up-down, right-left, top-bottom or front-back reference point for any panel. Panel 'Width and Length' are measured from outside-edge to outside-edge of the sewn perimeter hem at the four corners only. Knit material has inherent tension and flex in the looming process that will resolve aesthetic issues when installed taut with rope lacing. Grommets on one side of panel are unlikely to line up with grommets on the opposite side or from one grommeted pinch pleat to the next. Exact one foot on-center grommet spacing, specific grommeted pinch pleat centering, and special placement on a particular side for grommets is not warranted. Any panel over 12 foot wide may have a noticeable factory knitted loom splice seam without notice in advance since the 20, 26, and 32 foot wide stock roll width fabrics are manufactured on side-by-side looms. We traditionally cover this seam with a grommeted pinch pleat, but it is possible to order plain cloth without a center GPP, per automated quoting form. Aesthetic issues are not warranted. For instance, the White 50% color knitted shade material can sometimes arrive with patches of orange discoloration and spotting as a result of the manufacturing process. This discoloration will dissipate after installation in the sunlight. Shade material may always be slightly wrinkled from rolling onto storage tube or shipping and knit appearance can vary from sample swatches presented and may also vary between various stock widths. Minor aesthetic flaws in knit appearance, stitching, and snags are not a structural panel failure problem and not warranted. Shade material is lockstitch knitted to prevent structural unraveling. Longevity is the same regardless of aesthetic appearance flaws in the fabric knit or perimeter webbing. If need be, one can use needle and thread to pull small flaws together and super-glue sealed. It is not considered a warranty-related defect unless it affects panel performance. Special fire resistant certified shade materials are not available. The finish 'Length' ordered is what we produce by cutting enough fabric to fold hem and GPP. The only time to anticipate deviation in finish dimension purchased is when 'Width' is a stock material width of 6, 8, 10, 12, 20, 26 and 32 foot. Then, finish 'Width' is likely going to be two to three inches less after folding and sewing perimeter hem and any length-wise grommeted pinch pleats. ALL other times, the size panel you request is the finish size we do our very best to produce. Knitted shade netting is inherently difficult to work with due to tension releasing when cut to custom sizes, so trade-standard warranty for free replacement is a four inch tolerance. As measured at four corners, any error of five inches, or more, is warranted for free remake, replacement, or refund at our sole discretion. This accuracy guarantee does not apply to shapes other than rectangles or any panel dimension over 32 foot. Errors of less than five inches are considered for remedy on a case-by-case basis only when the panel has not been installed and can be resold as a new-unused remnant. Special grommet placement requests are not warranted and grommet spacing at exactly one foot on center is not warranted. Click here for knit shade material engineering specifications and product MSDS sheet.

Warranty and Warnings

Merchandise purchased from is covered only under that product's manufacturer warranty. Client is solely responsible for presenting all claims under those warranties directly to the warrantor. makes no consultation, service work, or system design warranties, whether express or implied and shall not in any way be held responsible for any customer misuse of Our products or misunderstanding of any and all of Our designs, whether express or implied. All responsibility and liability for any and all damages caused by viruses contained within the electronic files of this site are disclaimed. All information contained within this site and supplied by any and all consultations, design work and service work is governed by the following information disclaimer. Be aware that septic tank effluent, composting toilet materials, and greywater alike contain bodily fluids and as such are regulated as Hazardous Materials by the Federal government. Such hazardous materials (raw sewage) should be handled only by licensed professionals trained in the proper safety procedures and using proper safety equipment. If you are unsure of the correct handling and safety procedures, please check with your local health department for more detailed information.

Installation and Liability

Merchandise purchased from or through must be installed by a licensed professional installer and in accordance with manufacturer's specifications and local/state/federal electrical, plumbing, health and building department regulations. Building department regulation requirements differ from one town to the next and it is the Client's sole responsibility to ensure compliance. This is particularly important with hard-wired electric kitchen appliances and hoods, gas refrigerators, septic systems, greywater projects, and composting toilets. Even shade panel installations can come under local regulatory scrutiny (pull permits) in some parts of the United States. Client understands that shade panels are not rated for any fire resistance and hereby confirms that no fire resistance has been expressed or implied by Seller for Merchandise. Client is solely responsible for purchasing (pulling), and coordinating all of the inspections for all of the necessary electrical, plumbing, grading, road, health and building permits for their project. Some of these services, as requested, can be provided to Our Summit County, Colorado Clients where is a licensed and insured general Contractor (license number 6) and septic system installer (license number 69). is not an architectural nor an engineering firm. We do Our best to consult on your project, but site specific engineering, load calculations, soil viability testing, and/or custom blueprinting are not included in any consultation service or system package We sell.

Art and Data Release

Client does hereby irrevocably consent to and authorize the anonymous use and reproduction by Us, or anyone authorized by Us, of any and all artwork, digital images, or stories submitted via email, phone or fax. Our primary concern is protection of your privacy. We never release Client information to anyone for any reason, so any use would be purely anonymous. We will not pay a fee or provide compensation of any sort, now or hereafter, for information, solicited or otherwise, that We share. Client hereby agrees to allow reproductions to be presented online or in printed format and hereby gives Us unrestricted right and permission to copyright and use, re-use, publish, and republish artwork, stories or digital images submitted without restriction as to changes or reproduction hereof in color or otherwise, made through any and all media now or hereafter known for illustration, art, promotion, advertising, trade, or any other purpose whatsoever. This agreement shall be binding upon Client and their heirs, legal representatives and assigns.

Information Disclaimer

The information from or through this site and from or through Architerra Enterprises, Inc. (d.b.a. The Natural Home Building source and is provided 'as-is', 'as available', and any and all warranties, express or implied, are disclaimed (including but not limited to the disclaimer of any implied warranties of merchantability and fitness for a particular purpose). We are not an engineering or architectural design firm. We are not licensed electricians or plumbers. We do not accept any legal liability whatsoever for any 'errors and omissions' perceived or otherwise. Any and all consultation given, or website information provided, may contain typos, errors, omissions, problems, or other limitations. Merchandise specifications are subject to change at any time by manufacturer without any advance notice from Our company or the manufacturer. Product specifications and installation instructions are likewise subject to possible error and may change at any time without Our knowledge. Blueprints, sketches, and any written consultation are provided for informational educational purposes only and not intended for construction-ready application without approval first by locally licensed structural engineer and local building department regulations. Our sole and entire maximum liability for any inaccurate information, for any reason, and user's sole and exclusive remedy for any cause whatsoever, shall be limited to the amount paid by the customer for the information received (if any cost was involved). We are not liable for any indirect, special, incidental, or consequential damages including but not limited to damages for loss of business, loss of profits, litigation, or the like, whether based on breach of contract, breach of warranty, tort (including negligence), product liability or otherwise, even if advised of the possibility of such damage. The limitations of damages set forth above are fundamental elements of this website, communications, and information provided without such limitations. No representations, warranties or guarantees whatsoever are made as to the accuracy, adequacy, integrity, reliability, currentness, completeness, suitability or applicability of the information to a particular situation. Complaints by Client to any rating agency, company review, or personal referral concerning Merchant or Merchandise in direct disregard of this terms of service agreement are to be considered libel and will be prosecuted as such, if need be.

Consultation and Service

Written and verbal consultation on the specifics of any project is governed by this terms of service agreement, with or without purchase of Merchandise. Technical assistance is different with us because Our staff members live with what We sell. Housing, septic, composting and greywater systems all include free on-going consultation, so We'll take the time to answer your questions and ensure your project is a success. At the very least, We strive to save you money by avoiding costly mistakes, both short and long term. If We don't have an answer to your question right on the spot, We'll take the time to research it further and get back to you. We can consult on the phone, if you wish, but email allows us to much more completely answer your questions with sketches and links to related articles. Keeping everything in writing is a sure way to avoid any confusion with "you said he said" situations later. Our sustainable housing products are low-tech in nature, but their design is typically complicated by the seemingly endless installation variables for unique locations and applications. Any and all consultation (blueprints, photos, written word and sketches) purchased from are the intellectual, copyrighted property of HTM house plans, septic system packages and greywater kit components Were designed and priced for the typical home and based upon the average soil type. Whether or not your local building department requires stamped engineer approval, you are well advised to take sample blueprints, sketch plans, and system consultation suggestions to a local professional engineer (PE). Local PEs are familiar with your soil type and more aware of unique building codes and concerns in your area. Most importantly, a local PE is readily available for the necessary site visits. your PE is then responsible for preparing a folder of notes and details which confirm the structural integrity, viability and liability for your project. is not an architectural design nor an engineering firm. We do Our best to consult on your project, but site specific engineering, load calculations, soil viability testing and/or custom blueprinting are not included in any consultation service or system package We sell. Communication is intended only for the paid Client recipient(s) and may be confidential and/or legally privileged and must be treated as such in accordance with state and federal laws. Any disclosure, copying, distribution or action taken in reliance on the content is strictly prohibited.

Fiberglass Water Tubes

Water Tube and Cap ("Item") is manufactured for Client on special order basis by an independent company ("Manufacturer"). Manufacturer's warranty and guarantee, and special terms and conditions of sale and delivery apply to this Item. No warranty or guarantee is provided, expressed, or implied by Merchant, Merchant and Manufacturer do not assume any liability or responsibility for damage in transit. Only the transportation company is responsible for damage in transit. Before signing and receiving Item from transportation company, Client should demand to see packing list from Item shipment. If shipment is short Item (for instance: three caps, not four) or damaged (any Item defects), refuse the goods until the transportation agent notes the shortage or damage in writing on the freight receipt waybill. Always require a copy of the annotated waybill with shortage or damage noted in writing and signed/initialed by driver.Watch for hidden damage and inspect all Items fully before signing and accepting the shipment from a freight carrier. Client signature is testament that Item arrived in the proper amount and in undamaged condition. Hidden damage or shortage (anything found after delivery) is Client's sole responsibility to file claim with transportation company. Merchant and Manufacturer do not assume any responsibility or liability for Item damage during/after installation. Manufacturer guarantees Item is up to its established standard of manufacture as to material and workmanship. In all claims, liability is limited to replacement of the invoice value of any Item claimed to be defective. Client assumes all risk and liability whatsoever resulting from the use of such Item, whether used singly or in combination with other substances. The materials purchased hereunder (Item) shall be examined and tested upon receipt thereof, and before the materials are used and within thirty days from such receipt, Client shall notify Merchant in writing of any claims on account of quality thereof. Failure to so notify Merchant shall constitute a waiver of all claims with respect to Item, and in any event the use of Item by Client shall be deemed to mean satisfactory performance on the Item and Merchant. No claim of any kind (whether as to Item delivered or for non-delivery of Item) shall be greater in amount than the purchase price of Item covered hereby with respect to which any damages are claimed. Merchant and Manufacturer will accept no returns unless previously authorized in writing with Return Merchandise Agreement. Item returned without RMA written permission is liable to non-acceptance and return at expense of Client. RMA will specify 25% restocking fee on Item, plus deduction for original cost of crating and shipping, plus Client is responsible for all return shipping arrangements and all related expenses. There are no promises, agreements, or understandings between Client and Merchant and Manufacturer not contained in this document. Should you use your own form to make a purchase based on a price quote from Merchant, the conditions contained herein shall be deemed to be incorporated in said order or contract or invoice.