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40 Gallon RV Water Tank 44 x 28 x 7 1/2
Important: SPECIAL ORDER - 10 TANK MINIMUM. This item is available on special order only. This is a custom made tank and according to current manufacturer data, there is an estimated 6-12 week production timeframe.
PLEASE NOTE: Due to this being a custom order there are no returns and no refunds.
This tank is manufactured for you when the order is placed. Returns are not accepted on special order products like this one. Elkhart Plastic tanks are manufactured to meet quality and health safety standards. With fewer impurities, these tanks are strong enough to take the bumps and bangs without compromising the security of your fresh water storage. Elkhart Plastics uses a process called roto-molding in which high-density plastic is rotated and molded into shape. This process creates a seamless tank in which the walls are of equal thickness, with no weak spots to cause trouble later. It is this process that has earned Elkhart Plastics the reputation for quality tanks. The dimensions of this tank are 44" in length, 28" in width and 7 1/2" in height with a wall thickness of 0.180”.
Premium FDA-Approved Material: Made from high-quality, durable polyethylene that’s fully approved for safe drinking water storage—better than many stock tanks installed in factory-built RVs.
Seamless One-Piece Construction: Engineered without seams or joints for superior strength and leak-proof reliability, outlasting and outperforming typical OEM tanks.
Stain, Corrosion, and Rust Resistant: Designed to stay clean and functional even after years of use, ensuring your water stays fresh and your tank stays dependable.
Versatile Compatibility: Ideal for RV enthusiasts, horse trailer owners, or marine adventurers looking for a long-lasting, hassle-free water storage solution.
Enhanced Durability: Built tougher than many standard factory-installed tanks, offering peace of mind whether you’re replacing an old tank or upgrading your setup.
| Material | High-quality durable polyethylene |
|---|---|
| Width (inches) | 28 |
| Height (inches) | 7.5 |
| Length (inches) | 44 |
| Capacity (gallons) | 40 |
| Wall thickness (inches) | 0.18 |
- What are the dimensions of the 40 gallon rv water tank? The tank dimensions are 44 inches in length, 28 inches in width, and 7 1/2 inches in height.
- Is this water tank suitable for storing drinking water? Yes, this tank is made from premium FDA-approved polyethylene material, making it safe for storing drinking water.
- Can i return the 40 gallon rv water tank if i am not satisfied? No, this is a special order item and there are no returns or refunds accepted for this product.
- How is the tank constructed to ensure durability? The tank is made using roto-molding which creates a seamless one-piece construction with walls of equal thickness, making it strong, leak-proof, and durable.
- Is there a minimum order quantity for this water tank? Yes, there is a 10 tank minimum order required as this product is only available on special order.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

