Sixteen gallons is a curious, useful size - more than a day tank, less than a full cruising supply, exactly right as the second tank that balances a boat or the first tank of a minimalist camper build. The B364 delivers it as a 25 lb bare marine molding, middle-of-the-road wall in a package that one person can carry aboard, dry-fit, and install between lunch and dinner.
The blank ships without fittings because Ronco's plant in Tustin, California finishes every tank against the customer's drawing - a practice unchanged since 1974. Print the plan below, mark your fill, vent, and pickup with the fitting planner on this page, and each port arrives spin-welded or thread-installed precisely where your hoses want it. Ordered for fresh water, the polyethylene is FDA-compliant and safe for potable supply; ordered with waste fittings, the same dual-role B-series shell does duty as a 16-gallon gray or black holding tank.
Full, it holds about 133 lb of water - the point at which a strap stops being a suggestion. If the capacity is right but you have not seen the shape your compartment needs, walk the boat tank category and the road-going range in RV water tanks; the waste-side catalog is under RV holding tanks, and the maker's full line is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B364 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.
