Ronco Plastics 13H - 20 Gallon Plastic RV Holding Tank

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 any other. The 13H is the standard-body entry in that crowd: a conventional rectangle, 25 lb blank, the default answer when your bay is a normal bay.

The specialists around it define the edges. The 43H stretches 20 gallons into an 81 x 11 x 7.75 inch rail-runner; the 24H flattens it to 40.5 x 30 x 5 inches for near-zero-clearance floors; the 65H is the lightest-blank 20-gallon option. If none of those constraints apply, the 13H is the straightforward buy. The full field - these and the rest - is in the RV holding tanks category.

Whatever the shape, the duty is identical: gray or black water only, no potable claims, about 167 lb at full. Each is rotomolded in Tustin, California, where Ronco has built since 1974, with fittings installed to your layout - print the drawing below, mark your fitting locations, and pick spin-weld or threaded. OneSource Plastics is an authorized Ronco Plastics dealer.

Technical drawing: download the Ronco Plastics 13H 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.