RV Holding Tanks

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...

The 62H is a square: 24.5 x 24.5 inches, 11.5 deep, 26 gallons. Square tanks exist because square holes exist, usually the bay left over between two frame members after everything else was packaged,...

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...

When a mold stays in service across decades of RV platforms, it is because the shape keeps fitting; OEMs designed bays around these blanks, which is exactly what makes them findable as replacements...

The 29H is the proportionate one: 16 gallons at 36 x 22 x 9.25 inches, a footprint close to a standard underfloor bay in mid-size travel trailers. No extreme dimension, no clever geometry - just a...

Twenty-six pounds of polyethylene for 17 gallons of capacity makes the 2H one of the stoutest builds in Ronco's mid-size holding range. That material ratio is the spec to notice: heavy walls resist...

Between the crowded 17-gallon class and the popular 19s and 20s, the 69H holds the 18-gallon line - a capacity Ronco keeps in the range because OEM bays were built around it and replacements have to...

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...

Where most 22 gallon holding tanks spread out, the 53H digs down: 30 x 22 inches of footprint and a full 13.5 inches of depth, the deepest shape in Ronco's 22 gallon family. That geometry suits...