Ronco molds 80 gallons two ways, and the B363 is the compact one: 39.5 x 31.5 x 16.75 inches, a foot shorter in length than its four-foot sibling, trading run for width. That difference decides real installations - a coach bay interrupted by a crossmember, a boat compartment boxed in by frames - where forty-eight inches of tank will not go but under forty will. Same capacity, same 109 lb blank, a footprint that fits where the long version cannot.
It is a fresh water molding for RVs and boats: FDA-compliant polyethylene, rotomolded for potable service in Tustin, California, where Ronco has built tanks since 1974. Like every B-series blank it arrives configured to your drawing, not a factory guess - fill, vent, outlet, and level sender spin-welded or thread-installed to the marks you set. Print the drawing below, place your ports with the on-page fitting planner, and the tank shows up ready to plumb into your system.
Respect the full weight: about 667 lb of water needs bearers designed on purpose and a mounting position low in the vehicle or hull. The 109 lb blank itself is real freight, so quote your ZIP with the freight cost estimator first. Compare both 80-gallon forms and the rest of the big fresh moldings in RV water tanks and boat tanks, or browse everything on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B363 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.
