Ronco RV Holding Tanks

The 59H packs 10 gallons of waste capacity into a 28 x 14.5 x 11 inch envelope, which makes it one of the shortest holding tanks Ronco molds: at 28 inches end to end it clears bays that a standard...

The 100H is the tank you buy when the holding tank that died was an odd one. Ten gallons is the working size for pop-ups, truck campers, and small travel trailers, and Ronco Plastics molds a whole...

The 76H is the heavy one. Where most 11-gallon blanks come off the mold in the low teens of pounds, this tank ships at 32 lb - nearly three times the material of its sibling. That extra polyethylene...

Single-digit part numbers in Ronco's catalog mark the old guard, and the 7H is one of them - a 16-gallon holding tank that has been in continuous production long enough to have replaced its own...

The 12H goes deep instead of wide: 18 gallons in a 22 x 23 x 12.5 inch cube, the deepest draw in its capacity class. A tank like this occupies a compact square of floor - barely two feet on a side -...

The 57H solves the corridor problem: 16 gallons of holding capacity in a 63 x 10 x 8 inch run, a tank shaped like the space beside a driveshaft or along the outboard side of a frame rail. Ten inches...

On paper the 58H and its sibling are twins - both 16-gallon holding tanks, both 63 x 10 x 8 inches, both 19 lb blanks. The difference lives in the mold: each carries its own arrangement of molded...

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 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...