The Ronco Plastics B185 exists because 20 gallon compartments come in more shapes than any single tank can serve. It is one more distinct footprint in Ronco's marine fresh water line - a one-piece molding in FDA-compliant polyethylene, shipping at 83 lb from the Tustin, California plant that has been solving this exact problem since 1974. Start with the dimensioned drawing below: if the outline matches your space, the rest of this page is just confirmation.
Confirmation, and configuration. The B185 ships with fittings installed per order - spin-welded or threaded, at the sizes and positions you mark - so the tank arrives plumbed for your boat rather than for a statistical average of boats. Print the drawing, mark the fill, vent, and pickup where your hoses and deck hardware already are, and lock the plan in with the fitting planner on this page.
In service, 20 gallons of water weighs about 167 lb, and that number - not the ship weight - is what your platform and straps are really for. Once mounted, seamless polyethylene is as close to permanent as marine equipment gets. Other 20 gallon shapes and the full capacity range are at boat tanks; the entire line is mapped at the Ronco Plastics hub; the freight estimator prices shipping to your ZIP. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B185 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.
