Nine inches wide. That single dimension is why the 9H exists: a 7-gallon holding tank drawn out to 30 x 9 x 11.25 inches so it can slide into a chase, a rocker cavity, or the gap beside a frame rail where no squarish tank will go. Campervan converters and teardrop builders are the usual buyers.
It is an 11 lb molding that holds about 58 lb of gray or black water when full - waste service only, with no potable rating, so it belongs downstream of the sink or the cassette, never on the supply side. One-piece rotomolded polyethylene means no seams in a tank that will live inches from the road.
If the proportions are wrong, the 7-gallon 19H is the other mold at this capacity, the 9-gallon 36H at 30 x 12.5 x 7.25 inches trades width for height, and the full spread 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 9H 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
Product video. Watch the Ronco Plastics 9H - 7 Gallon Plastic RV Holding Tank (30.0" x 9.0" x 11.25") video (55 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.
