The B241 gives you 40 gallons of marine water capacity as Ronco molds it - completely bare of fittings. For a refit that is the correct starting point: your old tank's fitting layout is a map of someone else's boat, and this blank lets the new plumbing land exactly where yours actually runs. Print the drawing below to see the true shape, mark your fill, vent, and pickup, and use the on-page fitting planner to spec spin-weld or threaded fittings that Ronco installs before shipping.
Forty gallons is proper cruising water - days of galley and washdown supply - and in fresh service the natural food-grade polyethylene is the material potable systems want. The B-series is dual-role by design, though, so the identical molding can be ordered fitted for gray or black holding instead if that is the tank your layout is missing.
At 86 lb empty this is a thick-walled, serious piece of rotomolding, and full it holds about 334 lb of water - build a flat, supported platform and strap it down rather than trusting flanges. Tustin, California has been the home of every one of these moldings since 1974. Compare capacities in our boat tank category or browse maker-wide on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B241 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.
