RV Holding Tanks

Pick the 99H up before you judge it. At roughly 44 pounds, this blank carries about twice the polyethylene of most 22 gallon holding tanks in Ronco's line, which tells you where it came from: an...

The 37H is a 36-gallon gray/black holding tank, and like most of Ronco's waste line its exact outline lives on the technical drawing rather than in a headline dimension - print the drawing below, lay...

Fifty-six and a half inches long, 19 wide, 12.5 tall: the 5H is the long-and-lean take on a 40-gallon waste tank, drawn to run lengthwise along a frame rail where a wide pan will not clear the...

Forty-eight gallons puts the 60H at the big end of Ronco Plastics' RV holding-tank line, and the family around it is worth a look before you commit: the 48-gallon 92H holds the same volume in a...

Black tanks live a harder life than gray ones - solids, chemicals, long intervals between dumps - and 42 gallons is the size where a black tank stops dictating your travel schedule. The 21H is one of...

The 98H is the heavy one. Where its 25 gallon siblings blank out around the mid-twenties of pounds, this molding weighs in near 40, and in rotomolding, extra weight is extra wall. Thicker sections...

Fifty-three pounds of polyethylene before a drop of water goes in: the 68H is the heavyweight of Ronco's 33 gallon holding tanks, carrying roughly double the material of its siblings. In a rotomolded...

At 47 lb of bare shell, the 85H is the heaviest molding among Ronco's 36-gallon holding tanks - noticeably more polyethylene than the 32 lb 37H or the 27 lb 48H at the same capacity. When a tank...

Thirty-seven gallons is an oddly specific capacity, and that is the point: Ronco's mold library exists to match coach cavities, not catalog round numbers. The 66H is one of two 37-gallon gray/black...

When a coach was built around a 37-gallon waste tank, a 35 or a 40 does not solve the problem - the plumbing stubs and the cavity were framed for that shape. The 73H exists for those installs: one of...

Forty gallons is the workhorse size for gray tanks on mid-size coaches - big enough that showers do not fill it in a weekend, small enough to package under the floor. The 84H is the lightest of...

On a lot of coaches the dump valve hangs outboard, just inside the skirt - and feeding it from an end-dump tank means a rigid elbow that traps waste and eventually leaks. The 61H is molded for that...