Forty-two gallons in a 46 x 18 x 13 inch package makes the Ronco Plastics B182 the big tank for long, shallow spaces - bilge runs, under-berth channels, the full length of an RV storage bay. It is molded in Ronco's marine water / waste series, so the same substantial shell serves either master: potable fittings make it a fresh water tank in FDA-compliant polyethylene with true cruising range; waste fittings make it a 42 gallon gray or black holding tank that stretches pump-out intervals from a chore into an afterthought.
Length changes the plumbing problem. Across 46 inches, trim decides which end is downhill, so the outlet or pickup has to go at the end that actually sits low - and Ronco's per-order fitting installation, spin-welded or threaded at your marks, lets you put it there. Print the dimensioned drawing below, think about how the boat or coach really sits, and finalize the ports in the fitting planner on this page.
The molding ships at 90 lb; full of water it carries about 350 lb, spread along the full footprint - support the entire length, not just the corners, and strap it against motion. From Tustin, California, molding since 1974.
Fresh-side neighbors: boat tanks. Waste-side context: RV holding tanks. The whole line: the Ronco Plastics hub. Shipping by ZIP: the freight estimator. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B182 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.
