Twenty-two gallons, 25 lb empty, molded to disappear under a settee. The B117 is the kind of tank a good refit is built around: not the biggest, not the smallest, but the one whose proportions match the recess the designer left. Ronco keeps dozens of these mid-size marine shapes in the catalog precisely because no two hulls leave the same hole.
It is a fresh water molding in FDA-compliant potable polyethylene, seamless with no liner to fail. Full, it holds about 183 lb of water at 8.34 lb per gallon - enough mass to matter in a knockdown, so strap it to structure. And if the boat needs holding capacity in this envelope instead, order the same blank with waste fittings; the role is decided by the fittings alone.
Every fitting is installed per order at Ronco's Tustin, California plant, rotomolding continuously since 1974: print the drawing below, mark your fitting locations, or place them on the on-page fitting planner as you order. The rest of the marine catalog is in boat tanks, with everything Ronco molds on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B117 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.
