Ronco Plastics 45H - 25 Gallon Recessed End Dump RV Holding Tank (No Rails) (74.0" x 15.0" x 8.25")

Six feet two inches of tank, eight and a quarter inches tall. The 45H spreads its 25 gallons across a 74 x 15 x 8.25 inch envelope, which is the geometry of an underbelly installation: slung low between outriggers, hidden above the coroplast, where vertical space is measured in single digits. Shallow tanks trade drain-down authority for packaging, so outlet placement matters more here than on a deep tank.

That placement is exactly what Ronco lets you control.

Service is gray or black water only, no potable use. The blank weighs about 31 pounds, and a full load is roughly 208 pounds, 25 gallons at 8.34 pounds per gallon, distributed across the whole six-foot run, so strap it in more than two places. If your bay is taller and shorter, the 11H packs the same 25 gallons into 37 x 20.25 x 11.5, the 54H does 26 gallons in 28 x 22 x 11.5, and the odd-size 67H covers 24 gallons. More at 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 45H dimensional drawing - print it to plan your install. The outlet is molded in. Add the Ronco 3-inch uniseal to connect it.