Two tanks can hold the same 80 gallons and fit completely different vehicles, which is why Ronco molds more than one 80 gallon fresh water shape. The RVB363 is one of them: same light-duty potable spec as the rest of the B-series, its own distinct footprint. If you have already ruled out one 80 gallon tank because the bay would not take it, this molding - drawn in full below - may be the shape that does.
It weighs 109 pounds and is molded from FDA-compliant polyethylene in translucent natural finish, so it is legitimate for drinking water and self-reporting on level: sunlight or a work light behind the wall shows exactly how much is left. Ronco has been producing this family of tanks in Tustin, California since 1974, and the B-series catalog is deep precisely because vehicle bays come in every shape imaginable.
The tank arrives with fittings installed per order - spin-weld or threaded, located to the marks you provide. The right workflow: print the technical drawing below, draw your fill, vent, and supply positions directly on it, then verify the layout with the fitting planner on this page. Five minutes of planning buys you an install where every line reaches its port.
Browse other footprints in the RV water tank family or the complete Ronco Plastics catalog if this one is close but not quite. OneSource Plastics is an authorized Ronco Plastics dealer.