The B266 puts 13 gallons in an 18.25 x 14.38 x 13.12 inch marine molding - a hand-truck-sized tank that installs in the spaces a hull forgot it had. It is a whisker longer and lower than its near-cube sibling in the line, which is exactly the difference that decides which one clears your locker lid.
Dual-role, like every B-series blank: fresh-fitted, its food-grade polyethylene carries potable water for a day boat or camp rig; waste-fitted, it holds gray or black water for a compact head. Ronco ships it with no fittings - print the drawing below, mark each location, and use the on-page fitting planner to spec the spin-weld or threaded fittings installed to your marks at the plant.
The molding weighs 16 lb and carries about 108 lb full. Mount it low, bed it flat, strap it - small tanks skip these steps most often and regret it just as often. Molded in Tustin, California since 1974. Measure it against the rest of the small-tank shelf in our boat tank category or on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B266 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.
