The B273 concentrates 28 gallons into a 20.75 x 19.25 x 17.62 inch block - the compact take on a capacity its long-format siblings spread across four feet. If your boat or camper offers one solid cube of space instead of a corridor, this molding turns that cube into nearly a month of careful galley water or a serious holding reserve.
Which one it becomes is the fitting order's call. As a B-series dual-role blank, the B273 runs potable fresh water in food-grade polyethylene when fresh-fitted, or gray/black holding when fitted for waste. It ships with nothing installed: print the drawing below, mark each fitting location, and the on-page fitting planner specs the spin-weld or threaded fittings Ronco installs per order.
The molding is 26 lb; full, it is about 234 lb concentrated on under three square feet, so set it on structure and strap it with intent. Molded in Tustin, California, Ronco's only home since 1974. The long-format alternative lives in our boat tank category, coach shapes in RV holding tanks, and the whole catalog on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B273 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.
