Replacing a failed gray tank in a coach nobody makes parts for anymore is mostly a matching problem, and that is what a four-deep bench of 40-gallon shapes is for. The 71H is one of Ronco's four 40-gallon gray/black holding moldings - 32 lb of seamless, one-piece rotomolded polyethylene, blank until your order tells the shop where the holes go.
Work the drawing: print the sheet below, compare the 71H outline to the tank you pulled or the cavity you framed, and mark your drain, vent, and inlet locations directly on it. Ronco installs those fittings per order - spin-welded or threaded - at the Tustin, California plant it has operated since 1974, so oddball fitting placements from thirty-year-old coaches are routine rather than a problem.
Full weight is roughly 334 lb of waste. If the 71H outline misses your bay, run the other three 40s - the 5H at 56.5 x 19 x 12.5 inches, the 103H, and the 84H - or step to the 42-gallon 21H. Everything waste-side is indexed at RV holding tanks. Gray and black water only, never potable.
OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics 71H dimensional drawing - print it to plan your install and mark exactly where you want fittings located; Ronco installs spin-weld or threaded fittings to your marked spec.
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).
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.
