--- product_id: 214900958 title: "| RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks" brand: "classacustoms" price: "R47492" currency: ZAR in_stock: true reviews_count: 5 url: https://www.desertcart.co.za/products/214900958-rv-fresh-and-gray-water-tank-combo-pack-30-gallon store_origin: ZA region: South Africa --- # 70 Gallons total water capacity Seamless one-piece MDPE construction NSF/ANSI Std 61 certified safe materials | RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks **Brand:** classacustoms **Price:** R47492 **Availability:** βœ… In Stock ## Summary > 🚐 Stay hydrated, stay ahead: premium RV water tanks that keep you rolling fresh! ## Quick Answers - **What is this?** | RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks by classacustoms - **How much does it cost?** R47492 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/214900958-rv-fresh-and-gray-water-tank-combo-pack-30-gallon) ## Best For - classacustoms enthusiasts ## Why This Product - Trusted classacustoms brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Seamless, durable polyethylene design resists leaks and cracks - β€’ **Dual Tank Power:** Combine 30 & 40 gallon tanks for ultimate water storage flexibility - β€’ **Smart Venting System:** Non-pressurized tanks with venting prevent damage and ensure smooth water flow - β€’ **Versatile Installation:** Rotate tanks to fit your RV space perfectlyβ€”mount securely for worry-free travel - β€’ **Certified Safe Hydration:** NSF-approved materials ensure fresh & drinking water safety on the go ## Overview This combo pack includes one 30-gallon and one 40-gallon RV water holding tank made by Class A Customs in the USA. Constructed from NSF/ANSI Std 61 certified medium density polyethylene, these seamless, vented tanks safely store fresh or gray water without risk of pressurization damage. Designed for flexible installation and durability, they provide a total of 70 gallons of reliable water capacity for your RV adventures. ## Description FRESH/DRINKING WATER SAFE – MADE IN THE USA by Class A Customs using NSF Certified Materials Tank & fittings made from DOW NSF International NSF/ANSI Std 61 approved Medium Density Polyethylene (MDPE) Resin SEAMLESS One-piece construction, no seams to burst COLOR Creamy White you can see waterline through tank. OEM PART No retail box - no install instructions Have a certified technician install all parts to prevent product damage and personal injury PREPARATION Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process. TANK MUST BE VENTED allowing air in and out when in use. *DO NOT PRESSURIZE TANK* do not make a sealed connection from garden hose directly to tank damage will occur. DO NOT over-tighten fittings damage will occur. MOUNTING & BRACING Place tank on level surface and brace to prevent tank from moving during transit. DO NOT hang tank by straps. DO NOT place weight on tank. FOOD VENDORS - BEFORE PURCHASING - Verify all requirements with health department where inspection will be made. ## Features - Combo Pack (ONE) 30 Gallon & (ONE) 40 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage - NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process. - 30 and 40 GALLON EACH TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads. - 30 GALLON TANK MEASUREMENTS 34.5” x 12” x 17.5” -Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement) - 40 GALLON TANK MEASUREMENTS 39.5” x 13” x 18” -Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement) ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0897X8DKQ | | Best Sellers Rank | #306,754 in Automotive (See Top 100 in Automotive) #112 in RV Freshwater Tanks & Inlets | | Brand Name | classAcustoms | | Capacity | 30 gallons | | Color | Creamy White | | Customer Reviews | 4.5 4.5 out of 5 stars (94) 4.5 out of 5 stars | | Item Dimensions L X W X H | 39.5"L x 12"W x 17.5"H | | Manufacturer | Class A Customs | | Manufacturer Part Number | TKC-30/40 | | Material Type | Polyethylene (PE), Resin | | Number Of Items | 2 | | Shape | Rectangular | | Specification Met | National Sanitation Foundation 61 | | Unit Count | 2 Count | ## Product Details - **Brand:** classAcustoms - **Capacity:** 30 Gallons - **Color:** Creamy White - **Material:** Polyethylene (PE), Resin - **Product Dimensions:** 39.5"L x 12"W x 17.5"H ## Images ![| RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks - Image 1](https://m.media-amazon.com/images/I/51ytAjDl9VL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to install holding tanks. *by on Reviewed in the United States October 7, 2025* The sizes are precise. Thick plastic, should last years of installed correctly. Schematics came with the tanks, very easy to understand and folow. ### ⭐⭐⭐⭐ Cheaply made with glues ends instead of molded but the shape is perfect. *by on Reviewed in the United States January 15, 2023* I wish it had caps included ### ⭐⭐ Don’t hold shape *by on Reviewed in the United States February 4, 2022* I ordered this kit of two water tanks for my shuttle conversion. After a couple months after install, both tanks have started to deform and not hold their original rigid shape. I’m very concerned about the longevity of the tanks and I’m worried that I may have to replace them soon with a quality brand. For the price I paid for these tanks and the expensive shipping (this is not Prime eligible), I expected better quality. ## Frequently Bought Together - Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks - SEAFLO 33-Series Water Pressure Pump - 115V AC, 3.3 GPM, 45 PSI, Self Priming, Smart Pressure Switch, UL & CSA Certified, for RV, Caravan, Off-Grid, Marine, and Industrial Use - 110V-120V 1440-1500W Small Under Sink Tank 2.5 Gallon Water Heater Hot Storage,Mini Instant Electric RV TR Trailer Kitchen Compact,Food Truck 2 PCs 16” Long 1/2”FIP Stainless Steel Hose (BI-2.5) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/214900958-rv-fresh-and-gray-water-tank-combo-pack-30-gallon](https://www.desertcart.co.za/products/214900958-rv-fresh-and-gray-water-tank-combo-pack-30-gallon) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-26*