Day boats and small cabins do not need a hundred gallons; they need a tank that fits. The Ronco Plastics B373 is a 16 gallon B-series molding sized for compact installations where every inch of locker space is contested. The dual-role shell takes either job: order potable fittings and the food-grade polyethylene handles drinking water, or order waste fittings and it becomes a compact gray or black holding tank.
Sixteen gallons of water weighs about 133 lb at 8.34 lb per gallon, and the bare tank ships at 47 lb, so even small platforms carry it comfortably.
The factory installs fittings per order, spin-welded or threaded exactly where you mark them. Print the drawing below, plot your connections, and work the fitting planner on this page to finish the spec. Ronco has done custom-fitted moldings from Tustin, California since 1974, on small tanks with the same care as large ones.
See more boat tanks, RV water tanks, and RV holding tanks. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B373 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.
