Ronco RV Holding Tanks

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...

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...

Six inches. That is the whole vertical story of the B235, and it is the reason this tank exists: 18 gallons spread across a 40.75 x 18 x 6 inch pancake that slides under a berth, a cockpit sole, or...

The B257 packs 20 gallons into an 18.5 x 18 x 16 inch near-cube - the most compact way Ronco molds this capacity. Where its slimmer siblings trade length for a low profile, this one trades nothing...

Twenty-two gallons is more than a day tank and less than a cruiser tank - the capacity for the boat or camper that goes out for a long weekend and hates rationing. The B276 carries it in a 23 x 16.88...

The B366 rounds out the B-series small-tank bench with 18 gallons in a 22 x 17 x 12 inch molding - compact in plan, moderate in height, the proportions of a tank that was designed to fit real lockers...

Nineteen gallons in 27 x 15.25 x 12 inches: the B549 sits in the gap between the small day-boat tanks and the serious cruising sizes, which makes it the natural upgrade when a boat's original tank...

The B526 gives you 16 gallons in 26 x 14 x 11 inches - weekender scale. It is the size that covers two people and two days on the hook without surrendering a whole locker, and at 19 lb empty it goes...

Eight gallons in a squarish 17.75 x 15.75 x 8.25 inch tray - the 21W is sized for the systems people forget to plan: the outdoor shower feed, the dedicated dish-rinse supply, the gray catch under a...

The Ronco Plastics B408 is a tidy 25 gallon rectangle, 32 x 22 x 10 inches, one of the most versatile shapes in the B-series: shallow enough for underfloor bays, compact enough for lockers, big...