The 86H is a 65-gallon holding tank for builds where the bathroom is not an afterthought - toy haulers with full showers, bus conversions, mobile grooming and service rigs. Sixty-five gallons of gray or black capacity means the shower, the galley sink, and the toilet can all drain to one tank and you still measure the interval between dumps in days.
The blank weighs 97 lb, which for a molding this size signals a thick, service-grade wall rather than a light liner. Full, it holds about 542 lb of waste water, so treat the installation like the structural job it is: continuous support under the floor of the tank, straps to frame, and no load hanging on the plumbing.
Fittings are not pre-drilled guesses - they are installed per order at Ronco's Tustin, California plant, spin-welded or threaded exactly where your drain runs land. The shop has worked this way since 1974. Print the drawing below and mark your fitting locations, or place them on the on-page fitting planner. For tighter floors, step down to the 48-gallon 92H or the 37-gallon 66H, or browse the whole wall of shapes in RV holding tanks and on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics 86H 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.
