Ronco Plastics 34H - 10 Gallon Plastic RV Holding Tank (36.0" x 13.0" x 6.0")

Six inches. That is the whole vertical story of the 34H: a 10-gallon holding tank drawn out to 36 x 13 inches so it can live in a bay with almost no depth at all. Underfloor cavities in low-deck trailers and van conversions rarely offer more than a hand-span of clearance, and this is the molding Ronco built for exactly that gap.

Spreading a tank this thin costs nothing in capacity but does spread the load: filled with gray water it weighs about 83 lb across its footprint, a gentler structural ask than a deep cube concentrating the same weight. It ships at just 12 lb as a blank. If your bay has depth to spare and you would rather have a shorter tank, the 59H carries the same 10 gallons at 28 x 14.5 x 11 inches. And if low-profile is the constraint but you need real volume, the flattest big tank in the family is the 24H, a 20-gallon molding at 40.5 x 30 x 5 inches.

Like every H-series tank this is strictly a waste vessel - gray or black water, never fresh supply. It comes out of Ronco's Tustin, California plant (rotomolding there since 1974) as a sealed blank, and your fittings are installed to order: print the drawing below, mark where you want each spin-weld or threaded fitting, and it ships plumbing-ready. More footprints in the RV holding tanks category. OneSource Plastics is an authorized Ronco Plastics dealer.

Technical drawing: download the Ronco Plastics 34H 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.