At 30 x 20 x 12 inches and a 29 lb ship weight, the Ronco Plastics B157 is a 30 gallon tank that one person can position with one hand while the other holds the flashlight - which is roughly how boat and RV tank installs actually happen. It belongs to Ronco's marine water / waste series, so the same molding covers either assignment: order it with potable fittings for FDA-compliant fresh water service, or with waste fittings as a 30 gallon gray or black holding tank.
The dual role works because nothing is pre-cut. Ronco installs every fitting per order, spin-welded or threaded at your marked locations, so the port layout matches the duty and the vehicle instead of a compromise between them. Print the drawing below - it carries the full dimensions - mark your fill, vent, and outlet, and finalize in the fitting planner on this page.
Filled with water the B157 carries about 250 lb, a number worth reading twice against that 29 lb shell: the mounting has to be built for the contents, not the tank. Flat support under the whole bottom and straps that stay tight cover it. Molded in Tustin, California by a company at this since 1974. Related fresh shapes: boat tanks. Waste plumbing context: RV holding tanks. Everything else: the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B157 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.
