Ronco Marine Holding Tanks

The B213 is the shape most people picture when they picture a tank: a clean 28 x 16 x 12.25 inch rectangle, 20 gallons, no exotic proportions. That ordinariness is its virtue. It fits benches,...

Small boats deserve tanks engineered as seriously as big ones. The Ronco Plastics B475 packs 15 gallons into a compact one-piece polyethylene molding that weighs 26 lb, sized for pocket cruisers,...

Some hulls only give you a slot, not a bay. The Ronco Plastics B369 is built for that slot: 18 gallons in a 47.5 x 11.38 x 8.5 inch chase, barely wider than a bilge stringer. It is a B-series...

The B534 packs 14 gallons into a chunk roughly 16 inches long by 15.75 wide by 14 tall - nearly a cube, and one of the most space-efficient small moldings Ronco makes. Where the shallow B-series...

The B527 is a shallow 18-gallon tray of a tank - just over 34 inches long, roughly 15 inches wide, and only 9.5 inches deep. That last number is the reason it exists. Under a V-berth, under a cockpit...

The B128 is a tube with corners: 34 x 12 x 12 inches, a foot-square section stretched nearly three feet long, carrying 22 gallons down spaces where nothing wider will pass. Keel lines, frame-rail...

The Ronco Plastics B181 spreads 20 gallons across 30 x 18 x 10.5 inches - a low, wide molding built for the horizontal gaps under berths, seats, and camper floors. It is part of Ronco's marine water...

The B200 is a crossover in the truest sense: a 20 gallon molding at 24 x 17 x 12 inches that Ronco lists for marine and RV service, as water or as waste, with the role fixed only when the fittings go...

Seven and three-quarter inches of height. That is the B211's entire vertical demand, and it is the reason this 18 gallon molding fits where tanks are not supposed to fit: under cockpit soles, beneath...

The B232 is a tank shaped like a floor joist: 48.5 x 10.75 x 8 inches, four feet long, narrower than a sheet of notebook paper, and holding 18 gallons anyway. Shapes like this are not designed at a...

A 21 x 21 inch square, 11.25 inches deep, 20 gallons: the B233 is marine tankage at its most rational. No long axis means no wrong orientation - the tank drops into a square locker or a cockpit void...

The B234 keeps 20 gallons under nine inches tall. Its 33.25 x 17 x 8.75 inch envelope is drawn for the underfloor middle ground - shallower than a locker, deeper than a chase - which happens to be...