The 70H is the 15-gallon holding tank you buy for the rough route. At 19 lb it carries meaningfully more polyethylene than the standard blank in this size, and that extra wall is what stands between a waste tank and a stress crack when the tank lives close to the axles on a rig that sees forest roads and frost heaves.
Waste duty is absolute here: gray or black water, nothing potable, no exceptions. Filled, the tank holds about 125 lb of contents, and a heavier-walled tank flexes less under that moving load - which is also why fittings on a stiff molding seal better over years of cycles.
Inside Ronco's 15-gallon class you have alternatives to weigh: the 18H is the lighter 15-gallon standard build, the 104H a 15-gallon blank from the newer mold series, and the 42H a radical 91.5 x 7 x 16 inch panel format. The complete waste line is in the RV holding tanks category.
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 70H 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 70H - 15 Gallon Plastic RV Holding Tank video (62 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.
