The B362 is the light-build 38-gallon marine blank: 42 lb empty, a little over a pound of polyethylene per gallon, sized for the refit where the tank lives in a cradled, protected bay and the installation budget is measured in hatch openings and helping hands. Thirty-eight gallons is a meaningful supply - a cruising couple's week of careful water - delivered in a package one determined person can still move through a companionway alone.
It ships bare, and the fitting map is yours. Print the drawing below, position fill, vent, pickup, and sender with the fitting planner on this page, and Ronco spin-welds or thread-installs every port to those marks before the tank leaves Tustin, California - the same customer-drawing workflow the plant has run since 1974. Specified fresh, the molding is FDA-compliant and potable-safe. Specified for waste, the dual-role shell becomes a 38-gallon gray or black holding tank with no other change.
Full weight is the design load: about 317 lb, wanting flat, continuous support and straps that would hold the tank through a slam. Ronco molds this capacity in more than one form, so compare shapes across the boat tank category before committing; road builds should scan RV water tanks, and the complete line is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B362 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.