RV Holding Tanks

Every catalog starts somewhere, and Ronco's starts here: the 1H, part number one, a 20-gallon holding tank that has been in the line since the Tustin, California shop began rotomolding in 1974. Molds...

Twenty-six gallons in a 28-inch-long package: the 54H is the space-efficient member of its size class, a 28 x 22 x 11.5 inch box that fits compartments too short for the sprawling shapes. The blank...

The 35H is a pancake: 9 gallons of holding capacity rolled out to 29.75 x 22.5 inches but standing just 8 inches tall. Ronco Plastics draws it this way for underfloor waste service where the frame...

The Todd Marine 35-gallon marine water & holding tank (85-1525WH) is a one-piece rotationally molded polyethylene tank engineered for potable water storage or waste holding aboard boats and RVs. The...

Nearly seven feet of tank. The 44H runs 80.75 x 14 x 6.75 inches - a 12-gallon holding tank stretched into a beam that lays along a frame rail or under a full-length slide floor where nothing...

Start with the drawing on this one. The 104H comes from Ronco's newer 100-series molds, and if you are replacing a failed tank or designing a fresh bay, the dimensioned drawing below is the fastest...

A black-tank replacement is the classic job for the 94H. Seventeen gallons matches the toilet waste capacity of a wide band of travel trailers from the last few decades, and when the original tank...

Weight first: a full 16H carries about 158 lb of waste water. That number - not the 25 lb the empty blank weighs - is what your mounting hardware, straps, and floor structure have to be sized for,...

Twenty gallons is the most contested size in Ronco's holding line - the maker keeps roughly a half dozen distinct 20-gallon molds in production because that capacity maps to more RV floor plans than...

Five inches. That is the whole height of the 24H, and it is the reason this tank exists. Underfloor bays, basement compartments, and the gap between chassis rails on a lot of coaches will not take a...

Seventeen pounds. Among Ronco's crowded field of 20-gallon holding tanks, the 65H is the lightest blank - a full-size waste tank you can carry under one arm up a ladder into a mid-build coach. For...

A 22 x 22 inch footprint makes the 56H the square peg of Ronco's holding tank line, and sometimes a square hole is exactly what you have. Twelve inches deep, 21 gallons, with the dump outlet...