Mold number 105 tells you something before the specs do: this is one of the late additions to a holding-tank library that Ronco has been expanding since 1974, cut because installers kept hitting a 45-gallon cavity that the four older shapes would not fill. The 105H is the modern answer - 45 gallons of gray/black capacity in a 37 lb seamless rotomolded polyethylene shell.
Filled, it carries roughly 375 lb, the same load as every tank on the 45-gallon bench: the 83H, the heavy-walled 87H, and the light 75H all differ only in outline and shell build. One step down is the 44-gallon 96H; two up, the 47-gallon 97H.
Waste service only - the potable line at RV water tanks uses FDA-compliant resin; this tank does not claim it.
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 105H 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 105H - 45 Gallon Plastic RV Holding Tank video (64 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.
