Eighty-two gallons is passage-making tankage. The B454 is for the cruiser provisioning for a week or more between fills - at 8.34 lb per gallon it carries about 684 lb of fresh water at capacity, a load that doubles as trim ballast if you site it thoughtfully. The shell ships at 120 lb, molded heavy for a tank that will spend its life cycling between full and empty.
Dual-role, as the B-series always is: potable fittings for water duty, sanitation fittings for gray/black holding, one molding either way. On a tank this size the fitting layout deserves real thought - print the drawing below, mark fill, draw, vent, and any inspection or sender positions where your ship's systems actually run, and Ronco spin-welds or thread-installs to your marks. The on-page fitting planner walks the sizing.
It comes out of Tustin, California, where Ronco has rotomolded tanks since 1974, and at this weight it travels motor freight - price your lane with the freight cost estimator. The rest of the large marine shells are in the boat tank category. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B454 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.
