Gray water or black water - the 77H does not care, but your plumbing layout does, and that is the decision this tank is usually bought to settle. As a 20-gallon blank with no pre-molded valve orientation locking you in, it takes its outlet, vent, and inlet wherever you mark them, which lets one tank serve either side of the waste system depending on how you spec the fittings.
What it will never do is carry fresh water. Ronco's H-series moldings hold no potable rating; drinking water belongs in the maker's separate L.D. water line. Within its own lane, the 77H is a 23 lb blank holding about 167 lb at full - so build the mounting for the full number.
Its 20-gallon rivals include the 13H, the standard-body 20-gallon blank, and the 1H, the original 20-gallon mold in the catalog. The complete waste lineup is in the RV holding tanks category, and the maker's full range at the Ronco Plastics hub.
Rotomolded in Tustin, California - Ronco's home since 1974. Print the drawing below, mark your fitting locations for the gray or black configuration you need, and each fitting is spin-welded or thread-installed at the plant. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics 77H 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.
