Forty-two gallons is passage-making water, and the B119 carries it in a blank built to match the ambition: 102 lb empty, a heavy-service wall molded for boats that measure trips in days offshore rather than hours off the dock. This is one of the largest marine water tanks in Ronco's B-series, and the construction assumes it will be buried deep in the hull and never inspected again.
The polyethylene is FDA-compliant, potable-rated, molded seamless - and the same blank takes waste fittings if what the boat actually needs is a large-capacity holding tank. Full, it holds about 350 lb of water at 8.34 lb per gallon; between blank and load you are installing a quarter ton, so this is a job for structure, framing, and honest straps.
Ronco installs fittings per order at its Tustin, California plant, as it has since 1974: print the drawing below, mark your fill, pickup, vent, or waste locations, or set them on the on-page fitting planner. Heavy blanks reward early shipping math - run the freight cost estimator against your ZIP. The rest of the range is in boat tanks and on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B119 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.
