Ronco Plastics 101H - 35 Gallon Plastic RV Holding Tank

Thirty-five gallons of gray or black water is not a small load: full, the 101H is carrying roughly 292 lb of waste, which is why this tank is rotomolded as a single seamless piece of waste-rated polyethylene with no weld lines to weep under a decade of slosh and vibration. The blank molding itself ships at just 40 lb, so one person can dry-fit it in the bay before committing to fitting locations.

The 101H is one of the largest holding tanks in Ronco's mold library, which runs from a 7-gallon compact like the 9H at 30 x 9 x 11.25 inches up to the 50-gallon 91H. If 35 gallons is the right size but this footprint is not, the 3H spreads the same 35 gallons across a 64 x 32 x 8 inch pan for coaches with wide, shallow underfloor space. The full lineup is on the RV holding tank page.

This is a waste tank only - gray water or black water - and it is molded blank on purpose. Ronco installs your drain, vent, and inlet fittings per order, spin-welded or threaded exactly where your plumbing needs them: print the drawing below, mark your fitting locations, and the tank arrives ready to drop in. Every one is molded at Ronco's plant in Tustin, California, where they have been building RV tanks since 1974.

OneSource Plastics is an authorized Ronco Plastics dealer.

Technical drawing: download the Ronco Plastics 101H dimensional drawing - print it to plan your install and mark exactly where you want fittings located; Ronco installs spin-weld or threaded fittings to your marked spec.