Two features separate the 8H from the plain boxes in Ronco's 22 gallon class, and both are about installation. The end dump puts the waste valve at the end of the tank, where slide-out dump hardware and rear-bath floor plans want it. The rails are molded-in mounting flanges that take straps or brackets directly, so the tank hangs from its own structure instead of relying on a cradle you have to fabricate. If your old tank had tabs along its edges, this is that pattern.
Underneath the features it is a standard 22 gallon gray or black water tank, about 24 pounds as a blank and roughly 183 pounds full at 8.34 pounds per gallon, with no potable claim. The related shapes worth cross-checking are the 56H end-dump at 22 x 22 x 12 inches, the plain 10H at 34 x 22 x 12, and the long 33H at 83 x 13.5 x 10.
The whole family is under RV holding tanks. One Source Plastics is an authorized Ronco Plastics dealer.
Fittings
This holding tank ships with its outlet molded in, ready to plumb. Add the Ronco 3-inch uniseal (F3UNISEAL), a loose pipe-to-tank seal you press into the outlet yourself, with no threads or nuts.
Technical drawing: download the Ronco Plastics 8H dimensional drawing - print it to plan your install. The outlet is molded in. Add the Ronco 3-inch uniseal to connect it.
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).
Product video. Watch the Ronco Plastics 8H - 22 Gallon Plastic RV Holding Tank with End Dump and Rails video (56 seconds) with dimensions, fittings and shipping notes.
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.