Six feet of tank, ten inches tall. The Ronco Plastics B387 runs 72 x 33 x 10 inches and delivers 92 gallons from the low, wide void under an RV floor or a large boat sole, space that is otherwise wasted. Though sold most often for RV fresh water, it is a B-series dual-role molding: potable fittings make it a food-grade drinking water tank, waste fittings make it a very large low-profile holding tank.
Capacity this size demands respect. A full B387 carries about 767 lb of water at 8.34 lb per gallon along its length, and the molding itself ships at 133 lb. Support the full span; never let a six-foot tank bridge gaps.
Fittings are installed per order, spin-welded or threaded at your marks, which matters enormously on a tank this long where a misplaced outlet strands water. Print the drawing below, plot your low points, and use the fitting planner on this page. Ronco has built to order in Tustin, California since 1974.
See more RV water tanks and marine tanks, and check delivery with the freight estimator. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B387 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.
