The Ronco Plastics B286 is the tank you buy when the space you have is a box: 15.38" x 13.5" x 13.5", 11 gallons, no wasted corners. It is a favorite for console boats and small campers because it stands upright in a locker the size of a milk crate and still holds a meaningful supply. Fourteen pounds empty, about 92 lb full of water - numbers a modest shelf and two stainless straps handle easily.
Which 92 lb it carries is up to you. As a B-series dual-purpose molding, the B286 is ordered either as a fresh water tank - the polyethylene is FDA-grade and potable-safe - or as a gray or black waste holding tank, with the role fixed by the fittings Ronco installs. Every port is spin-welded or threaded at the position you mark, so print the drawing below, plot your hose runs, and confirm the layout with the on-page fitting planner before ordering. A vertical tank likes its outlet at the very bottom of a side wall; the planner will keep you honest about that.
Built in Tustin, California, where Ronco Plastics has specialized in these moldings since 1974, the B286 sits in the compact heart of our boat tank wall. The full Ronco Plastics lineup has its longer, flatter cousins when the locker changes shape. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B286 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.
