Fifty inches long and 16 x 16 in section, the B416 is the tank you run fore-and-aft along a keel line or tuck against a stringer where a boxier 50 gallon shell would never fit. The long, narrow proportions also keep free-surface effect in check: a partially full tank this shape shifts less weight side to side than a wide flat one.
It is a dual-role B-series molding, equally at home as a marine or RV fresh water tank or as a waste holding tank - fresh or gray/black is decided by the fittings, which Ronco installs per order rather than molding in a fixed pattern. Print the drawing below, mark your fitting locations along the 50 inch run wherever your plumbing wants them, and the shop spin-welds or thread-installs to your marks. The on-page fitting planner covers the size and style choices.
The blank ships at 95 lb; full of water the 50 gallons weighs about 417 lb, so support the full length of the tank, not just the ends. Molded in Tustin, California by Ronco, at it since 1974. See the rest of the long-format shells in the boat tank range and the RV water tank range, or start from the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B416 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.
