Nearly square and only 9 inches tall, the BOAT36W puts 16 gallons into a 23 x 21 inch footprint that reads more like a hatch opening than a tank. That is deliberate: compact near-square moldings drop through deck openings and settle into lockers that longer tanks cannot negotiate, which makes this one of the easiest retrofit sizes in the line.
It is built to Ronco's H.D. marine standard - a heavier wall than the light-duty RV series - in FDA-compliant polyethylene rated for potable water, molded in Tustin, California by a company that has been rotomolding since 1974. Fittings are installed per order, spin-welded or threaded to your marks: print the drawing below, position your fill, pickup, and vent with the fitting planner on this page, and the tank arrives ready to connect.
Full, it carries about 133 lb - enough to want a flat, supported base but light enough that placement options stay flexible. Browse the compact end of the range in boat tanks, see light-duty alternatives under RV water tanks, or start at the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.