Ronco Plastics RV50W - 26 Gallon Plastic RV Water Tank (50.0" x 16.0" x 8.0")

Ronco's own price sheet calls this molding the 50W L.D. and rates it 27 gallons; we list it conservatively at 26. Either way, the story is the shape: 50 x 16 x 8 inches, a long low slab of fresh water tank built to hide under a bench seat, beneath a bed platform, or along a basement wall where nothing taller than 8 inches will ever fit. It is the packaging trick that lets a small coach carry real water.

As a W-series tank it is potable-rated, molded in FDA-compliant natural polyethylene with a translucent wall that shows the water line at a glance. The blank weighs about 67 pounds, and full it carries roughly 217 pounds of water at 8.34 pounds per gallon, spread across its four-foot length, so support the span, not just the corners.

The nearest alternatives trade length for height: the RV71W holds the same water in 38 x 20 x 9 inches, the RV49W drops to 25 gallons, and the RV69W steps up to 32 gallons at 48 x 20 x 8. Whichever fits, it ships from Tustin, California, where Ronco has rotomolded since 1974, with spin-weld or threaded fittings installed at the points you mark on the printable drawing below. Browse the line at RV water tanks. OneSource Plastics is an authorized Ronco Plastics dealer.

Technical drawing: download the Ronco Plastics RV50W dimensional drawing - print it to plan your install and mark exactly where you want fittings located; Ronco installs spin-weld or threaded fittings to your marked spec.