
WATER TANK LIST HELPS
Fresh and Gray Tanks are at the Top of the List
Waste Tanks are at the Bottom of the List
Click the Part # to be taken directly to product page for photos, measurements, installation info, shipping method and warranty.
WATER TANK HELPS PAGE has much more information on the tanks.
MEASUREMENT INFORMATION
- Measurements are in Inches
- Measurements +/- .25” Due to Manufacturing Process
- Measurements DO NOT include Fittings or ABS Outlet
- Tank can be rotated to sit on any side - see item photos for complete details - Click the Part # to go to the item page.
- Tanks do NOT have inside baffles.
- 1.5" Female NPT Fittings are closed or sealed - fitting is water tight - remove membrane with razor knife to use
- .5" Female NPT Fittings are open
- Spout -- 1.25" Outer Diameter x 2" Long Boss Fitting (Smooth Pipe / Spout) fitting is open and glue does not stick to pipe, hose with clamp needed
- Loose Fittings and Hose that will connect to the installed tank fittings can be found in the Plumbing Category (parts not included with tank)
- WATER TANK HELPS PAGE has much more information on the tanks.
What is the difference between a Stock Tank and a Spouted Tank?
Class A Customs Stock Water Tanks Typically have - verify fittings before purchasing
Two) 1.5" Female NPT Fitting - fitting is sealed to use remove membrane with razor knife
Two) .5" Female NPT Fitting - fitting is open
Class A Customs Spouted Water Tanks Typically have - verify fittings before purchasing
One) 1.25" Outer Diameter x 2" Long Boss Fitting (Smooth Pipe / Spout) fitting is open and glue does not stick to pipe, hose with clamp needed
Three) .5" Female NPT Fitting - fitting is open
Spouted tanks are CLEARLY marked
Example Title - SPOUTED 10 Gallon Fresh / Gray Water Holding Tank | T-1000-SP
Example Part # - T-1000-SP

Unfortunately, we do not have a list of vehicles, uses or projects people have done with our tanks.
Please be sure to view our Water Tank List located at the top of each page or here: https://www.classacustoms.com/water-tank-list.html
Class A Customs manufactures tanks for multiple companies, we do not install the tanks, and we are not aware of the location the tank is placed in the RV or Sprinter.
We do not give recommendations on tanks to purchase.
You will need to verify if a tank will work for your application, before purchasing - Class A Customs will not recommend what items you need or what will work for your application.
- Click the part # to go directly to the item page
- Verify tank measurements and specs
- Verify fittings
- Tanks do not come in left side or right side - the tank you see is the only tank offered.
- It is recommended to get a larger Gray Tank(s) than Fresh Tanks to be sure you have enough capacity.
- Food Vendors you will need to check with your inspecting Health Department on rules and requirements, do this before purchasing.

Class A Customs manufacturers water tanks for multiple companies nationwide, we are located in Elkhart, Indiana.
- We do not install the tanks
- We do not know what vehicles they are used
- We will not recommend what items you need or what will work for your application.
- Click the part # to go directly to the item page
- Verify tank measurements and specs - Tanks can be very different in design
- Verify fittings needed and in tank
- Tanks do not come in left side or right side - the tank you see is the only tank offered.
- WATER TANK HELPS PAGE has much more information on the tanks.

If you are trying to replace a tank
- Look at current tank to see part #
- Check with vehicle manufacturer, be sure you have vehicle make and model #
- Vehicle build sheet may have information
- Online Search, check with hobby groups
- You may not be able to find the same tank, especially in older units.
- You may not be able to purchase from the tank manufacturer.

Looking for Sprinter Van Style Tanks
Type "Sprinter" in the search bar above, all tanks that are manufactured for Sprinter Vans will come up in the search or you can find them here on our Blog
Can you make me a Custom Water Tank?
Class A Customs makes custom tanks, please review the following information:- You would need to prepay to have a mold made this ranges from $9,000 and up, lead time can be 8 weeks or more.
- You would need to prepay for the qty of tanks your sales rep quoted you, build time can take 2 - 4 weeks depending on qty.
- Custom Water Tank Information Page
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Food Vendors you will need to check with your inspecting Health Department on rules and requirements, do this before purchasing.

Before you build or modify ----- verify rules and regulations.
Codes vary by local health departments, not state.
We are not aware of the codes or rules. We are not aware of what tanks or items you need.
Codes vary by local health departments, not state.
We are not aware of the codes or rules. We are not aware of what tanks or items you need.
- Ask your local Health Department to provide you with a list of water tank manufacturers that have the NSF logo built into the water tank.
- Forward the documents and tank information provided on the Class A Customs website to your local health department before purchasing to be sure these tanks will pass your local inspection, this is your responsibility.
- Class A Customs NSF Letterthis letter has all fresh/gray tank sizes, part #'s, measurements and fittings, along with material tank is made from.

Why is there no NSF logo in the tank?
Can I get an NSF logo on my tank?
Class A Customs was required to remove the NSF logo from all water tanks we manufacture in June 2020, the tanks continue to be made from the same NSF Certified Materials, built in the same way, built on the same machines, and built in the same building here at Class A Customs.
The NSF Company does not allow end users of NSF Certified Materials to use the NSF logo unless each kind of item that is produced has a certification paid for each year. This would mean every style of tank Class A Customs makes, even though they are made using the same NSF Certified Materials and made using the same process, we would need to pay to use the logo on each item, every year at a substantial cost.
All Class A Customs Fresh/Gray Water Tanks are manufactured using
Material is safe for Potable Water Materials – Class A Customs Fresh/Gray tanks are safe to be used for fresh or drinking water storage or gray water storage.
The temperature used during testing is 60 +/- 2°C (140 +/- 4 °F) and appears in Listings as "D. Hot". This is intended to apply to product applications where the product is used for either cold (ambient temperatures) or hot water up to domestic hot temperatures.
Because Class A Customs was verified to use and continues to use NSF Certified Materials to build our tanks,
Class A Customs is allowed to link directly to the NSF Website Materials Page and
Class A Customs is allowed to state the tanks are made from NSF Certified Materials.
The NSF associate Class A Customs was contacted by and worked with was;
Antonio Acree
Quality Representative, Quality & Compliance
NSF International | nsf.org
789 N. Dixboro Road, Ann Arbor, MI, 48105, U.S.A
1-800-NSF-MARK
Your inspector can validate this information with NSF by contacting them directly.
Before you build or modify a unit verify rules and regulations, codes vary by local health departments, not state. We are not aware what tanks or items you will need.
If you have more questions, please feel free to contact us.
You can find more information on the Water Tank Helps Page located on our main site, www.classAcustoms.com
Fresh / Gray Water Holding Tanks
| Part # | Gallons | Length +/- .25” | Width +/- .25” | Height +/- .25” | Installed Fittings | ||
| T-0500 | 5 Gallons | 17.5 | 7 | 9.5 | One) 1.5" Female NPT | Three) .5" Female NPT | Spouted T-0500-SP |
| T-0700 | 7 Gallons | 23.75 | 7 | 9.75 | One) 1.5" Female NPT | Three) .5" Female NPT | Spouted T-0700-SP |
| T-1000 | 10 Gallons | 19 | 9 | 14 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-1000-SP |
| T-1300 | 13 Gallons | 21 | 9 | 16 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-1300-SP |
| T-1500 | 15 Gallons | 25.5 | 11.75 | 11.75 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-1600 | 16 Gallons | 26 | 9 | 16 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-1600-SP |
| T-1800 | 18 Gallons | 23 | 10.5 | 17.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-1800-SP |
| T-2000 | 20 Gallons | 32.5 | 11.75 | 11.75 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-2000-SP |
| T-2100 | 21 Gallons | 34 | 9 | 16 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-2100-SP |
| T-2300 | 23 Gallons | 39.5 | 8.75 | 14.75 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-2300-SP |
| T-2500 | 25 Gallons | 33.5 | 10 | 17 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-2500-SP |
| T-3000 | 30 Gallons | 34.5 | 12 | 17.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-3000-SP |
| T-3300 | 33 Gallons | 36 | 12 | 17.75 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-3500 | 35 Gallons | 38.5 | 12 | 17.25 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-3645 | 36 Gallon | 38.625 | 17.75 | 12.75 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-3650 | 36 Gallons | 49.25 | 31.375 | 8.5 | One) 1.25" OD x 2" L Spout | Two) .5" Female NPT | |
| T-3913 | 39 Gallons | 35 | 12.625 | 22 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-4000 | 40 Gallons | 39.5 | 13 | 18 | Two) 1.5" Female NPT | Two) .5" Female NPT | Spouted T-4000-SP |
| T-4100 | 41 Gallons | 38.5 | 16.625 | 16 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-4159 | 41 Gallons | 71 | 10 | 14.625 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-4200 | 42 Gallons | 27.5 | 15.25 | 22.5 | Three) 1.5" Female NPT | Two) .5" Female NPT | |
| T-4320 | 43 Gallons | 25.5 | 17.75 | 23 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-4500 | 45 Gallons | 60 | 31.75 | 8.25 | One) 1.25" OD x 2" L Spout | One) .5" Female NPT | |
| T-4600 | 46 Gallons | 42 | 14 | 18 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-5000 | 50 Gallons | 38.25 | 14.25 | 22.25 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-5500 | 55 Gallons | 37.5 | 17.5 | 19.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-6500 | 65 Gallons | 44.5 | 17.5 | 19.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-6632 | 66 Gallons | 33.375 | 25.375 | 18.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-7500 | 75 Gallons | 50.5 | 17.5 | 19.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| T-10000 | 100 Gallons | 50 | 18 | 26 | Six) 1.5" Female NPT | Two) .5" Female NPT | |
| T-12500 | 125 Gallons | 64.5 | 18 | 26.5 | Six) 1.5" Female NPT | Two) .5" Female NPT | |
| Part # | Gallons | Length +/- .25” | Width +/- .25” | Height +/- .25” | Installed Fittings | ||
| UM-1000 | 10 Gallons | 24 | 13 | 8.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| UM-1500 | 15 Gallons | 36 | 13 | 8.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| UM-2000 | 20 Gallons | 48 | 13 | 8.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| UM-2500 | 25 Gallons | 38 | 20.5 | 8.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| UM-3000 | 30 Gallons | 48 | 20.5 | 8.5 | Two) 1.5" Female NPT | Two) .5" Female NPT | |
| Part # | Gallons | Length +/- .25” | Width +/- .25” | Height +/- .25” | Installed Fittings | ||
| T-2215 | 22 Gallons | 50 | 8 | 27 | NO Fittings Installed | NO Fittings Installed | |
| T-2632 | 26 Gallons | 65.875 | 10 | 12.875 | NO Fittings Installed | NO Fittings Installed | |
| T-2872 | 28 Gallons | 56.5 | 11 | 17 | NO Fittings Installed | NO Fittings Installed | |
| T-2955 | 29 Gallons | 74 | 9 | 17.5 | NO Fittings Installed | NO Fittings Installed | |
| T-3452 | 34.5 Gallons | 42 | 13 | 21 | One) 1.5" Female NPT | Three) .5" Female NPT | |
| T-3509 | 35 Gallons | 26 | 22 | See Photo | Two) 1.5" Female NPT | Two) 1.5" Female NPT | |
| T-3687 | 36 Gallons | 42 | 13 | 20 | One) 1.5" Female NPT | Three) .5" Female NPT | |
| T-4812 | 48 Gallons | 58.5 | 11.25 | 17.75 | NO Fittings Installed | NO Fittings Installed | |
Click Here -- You can see photos of all specialty tanks together.
Waste Water Holding Tanks

Water Tank Help Page
All items have more information located on the "tabs" on the items page.
Description - Product Features - Preparation & Installation - Food Vendors - Warranty - Shipping Method
Water Tank List Helps
- Click the Part # to be taken directly to product page.
- Because we have a variety of tanks, please click on the part # to go to the item page and view the CAD drawings or tank specs
Measurement Information
- Measurements are in Inches
- Measurements +/- .25” Due to Manufacturing Process
- Measurements DO NOT include Fittings or ABS Outlet
- Tanks do NOT have inside baffles.
- See item photos for complete details - Click the Part # to go to the item page.
Fitting Information
- 3” ABS Female Pipe - outlet can not be moved
- 1.5" ABS Female Pipe - outlet can not be moved - Due to the smaller outlet this tank is for dirty water from shower, handwashing, dish-washing - DO NOT use for human waste
Waste Water Holding Tanks
| WASTE TANK Part # | Gallons | Length +/- .25” | Width +/- .25” | Height +/- .25” | Tank built with Bracket Pockets |
| 24394 | 13 Gallons | 39 | 24 | 4 | |
| WT-1272 | 12.5 Gallons | 38 | 20.5 | 6.75 | |
| WT-1400 | 14 Gallons | 40 | 14.5 | 7.98 | |
| WTSD-1554 | 15 Gallons | 37.5 | 20 | 7.875 | |
| WT-1653 | 16 Gallons | 45 | 12 | 8.5 | |
| WTSD-1766 | 17.5 Gallons | 30 | 20 | 11 | |
| WT-1850 | 18.5 Gallons | 34 | 16.5 | 11 | X |
| WT-2262 | 22 Gallons | 22.25 | 19.25 | 13 | |
| WT-2400 | 24 Gallons | 42.5 | 23 | 9.25 | |
| WT-2525 | 25 Gallons | 34 | 16.5 | 14 | |
| WT-2700 | 27 Gallons | 35 | 17 | 10 | |
| WT-2770 | 27 Gallons | 33 | 19 | 13 | |
| WT-2776 | 27 Gallons | 31 | 14.4375 | 21.5 | |
| WT-2800 | 28 Gallons | 46 | 22 | 8.5 | |
| WT-2812 | 28 Gallons | 26 | 24 | 14 | X |
| WT-2839 | 28 Gallons | 38 | 20 | 11.5 | |
| WT-2865 | 28 Gallons | CAD | CAD | CAD | |
| WT-3000 | 30 Gallons | 55.75 | 23.75 | 8 | |
| WT-3100 | 31 Gallons | 47.5 | 24.5 | 8 | |
| WTCD-3161 | 31 Gallons | 34 | 19.5 | 13 | X |
| WT-3232 | 32 Gallons | 30 | 21 | 13.25 | X |
| WT-3240 | 32 Gallons | 26.5 | 20.5 | 17.5 | X |
| WT-3418 | 34 Gallons | 32 | 27 | 10.75 | |
| WT-3445 | 34 Gallons | 70.25 | 21.50 | 8 | X |
| WT-3469 | 34 Gallons | 54.75 | 28.38 | 6.63 | |
| WT-3800 | 38 Gallons | 56 | 24.25 | 8.9 | |
| WT-3923 | 39 Gallons | 85 | 17 | 8.75 | |
| WT-4000 | 40 Gallons | 56.5 | 24.5 | 9 | |
| WTSD-4000-LRC | 40 Gallons | 63 | 25 | 9.5 | |
| WTSD-4000-HRC | 40 Gallons | 63 | 25 | 9.5 | |
| WT-4800 | 48 Gallons | 56 | 30 | 9 | |
| WT-4919 | 49 Gallons | 33 | 25.5 | 17.25 | X |








