A 12 x 12 inch footprint. That is the entire deck space the B535 asks for, standing 13 inches tall and holding 7 gallons - the smallest footprint of any marine tank on this page. It exists for the boat or van where floor area is the scarcest resource of all and the only direction left is up.
Like its B-series siblings it is molded as a dual-role blank: fresh water tank in FDA-approved potable polyethylene with supply fittings, or compact waste tank with holding fittings - the order determines which. Ronco spin-welds or thread-installs your fittings to your marks. Even on a tank this small the two minutes of planning pay: print the drawing below, decide which faces will be accessible after installation, and put the ports there using the on-page fitting planner.
Eleven pounds empty, about 58 lb full - a one-hand tank to install and a solved problem afterward. The tall narrow shape does want restraint against tipping, so strap it to a bulkhead rather than relying on gravity. Molded in Tustin, California; Ronco's rotomolding operation dates to 1974.
Compare footprints across the boat tanks and RV holding tanks categories, or scan the full line on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B535 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.
