Replacing a holding tank starts with a tape measure, not a part number, and the 30H is one of the shapes you check once you know your cavity. It is a 22 gallon gray or black water tank, one of the lighter blanks in its class at about 21 pounds, from a family Ronco molds in more variations than any sane person would expect because RV manufacturers never standardized the hole.
The dimensioned siblings are the fastest way to triangulate: the 10H measures 34 x 22 x 12 inches, the 53H measures 30 x 22 x 13.5, and the 99H is the heavy-wall option. If none of those match your compartment, compare your measurements against this tank's drawing before ordering. Full weight is the same across all of them: 22 gallons at 8.34 pounds per gallon, about 183 pounds of waste water.
Ronco Plastics rotomolds these in Tustin, California, as they have since 1974, and installs spin-weld or threaded fittings per order. Print the drawing at the bottom of this page and mark inlet, outlet, and vent positions straight onto it, or drop them in with the fitting planner, and the tank shows up drilled for your coach, not a generic one. More shapes at RV holding tanks. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics 30H 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.
Freight
LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.
