The Ronco Plastics B322 is the slimmest kind of useful: 5 gallons in a 21" x 8.25" x 8" bar that slots into the gap beside a wheel well, behind a console face, or under a cockpit side deck. Spaces too narrow for any conventional tank are exactly what this molding was drawn for. It ships at 10 lb and holds about 42 lb of water when full - bracket-mount territory, no structural planning required.
Dual-purpose like its B-series siblings, the B322 is finished by its fittings: a small fresh water tank in FDA-grade, potable-safe polyethylene, or a compact gray or black waste holding tank for a minimal head or galley. Ronco installs each spin-weld or threaded fitting per order at the exact positions you mark. On a tank 8" wide, ports and hose elbows compete for the same air - print the drawing below, check clearances against your cavity, and use the on-page fitting planner to place everything before ordering.
Molded in Tustin, California by Ronco Plastics, tank specialists since 1974, the B322 holds down the small end of our boat tanks. When the next project needs the same trick in a different gap, the full Ronco Plastics catalog almost certainly has the shape. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B322 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.
