Ronco RV Holding Tanks

The B269 is a 4 gallon torpedo: 17.62 x 8.25 x 7.88 inches, longer than it is wide or tall, built for the tunnel-shaped voids behind kick panels, along chassis rails, and under gunwale edges. Where...

Three gallons sounds trivial until you need exactly three gallons in a space the size of a shoebox. The Ronco Plastics B377 measures 18.5 x 9.5 x 6.75 inches and exists for galley sinks, wash-down...

The B268 is a square-plan 5 gallon molding, 12.25 x 12.25 x 8.25 inches - a tank with the footprint of a floor tile. Its symmetry is its feature: with equal sides it fits its niche in any rotation,...

A perfect cube: 12 x 12 x 12 inches, 7 gallons. The B326 is the simplest shape in the B-series and one of the most useful, because a one-foot cube is the easiest volume to find on any boat or camper...

Three gallons is the smallest water system worth plumbing, and the B267 is its tank: 16.38 x 9 x 5.25 inches, 7 lb, a molding that fits inside a console, under a helm seat, or behind a galley kick...

Nine inches wide. That single dimension is why the 9H exists: a 7-gallon holding tank drawn out to 30 x 9 x 11.25 inches so it can slide into a chase, a rocker cavity, or the gap beside a frame rail...

Ronco Plastics molds two different 7-gallon RV holding tanks, and the 19H is the one you buy when the other shape loses. The 7-gallon 9H measures 30 x 9 x 11.25 inches - long and narrow; the 19H is a...

The 3W is one of the oldest shapes in the Ronco book, and the reason is visible in the numbers: 12 gallons at 29.75 x 13.88 x 8.12 inches. That is a tank sized to the voids vehicles actually contain...

The B271 is 7 gallons in a 19.25 x 13.12 x 7.12 inch flat pack - low enough to disappear under a bunk or bench, big enough to run a small galley or head for a day. Seven gallons is the capacity where...

The Ronco Plastics B390 holds 5 gallons in a 20 x 12 x 5.5 inch wafer, one of the thinnest moldings in the B-series. It exists for the jobs nothing else fits: under a step, behind a galley kick...

The Ronco Plastics B410 is a 5 gallon molding in an 18 x 13.5 x 7 inch low block, a different footprint from Ronco's other small tanks so that one of them fits whatever odd void your build presents...

Five inches. That is all the height the Ronco Plastics B288 asks for, spreading 9 gallons across a 32" x 15" pancake that slips beneath floors, berths and cockpit soles where nothing else goes...