Thirty-nine gallons is the in-between size that ends up being right more often than the round numbers on either side of it. The Ronco Plastics B469 offers that capacity in a one-piece rotomolded polyethylene shell weighing 45 lb, light enough to trial-fit alone before you commit to a mounting scheme.
Every B-series tank is a dual-role molding: the B469 becomes a fresh water tank or a gray or black waste holding tank purely through the fittings you order. Fresh water service uses the food-grade character of the polyethylene for drinking water; waste service uses the same sealed shell for holding duty. Ronco installs the fittings per order, spin-welded or threaded to the coordinates you supply, so the tank arrives plumbing-ready.
Filled with water, the B469 holds about 325 lb at 8.34 lb per gallon. Print the dimensioned drawing below, verify clearances in your compartment, then place inlet, vent, and outlet with the on-page fitting planner.
Ronco Plastics has been molding in Tustin, California since 1974. A dedicated 39 gallon holding tank exists if you want a committed waste unit, and the marine tank range covers surrounding sizes; freight quotes come from the freight cost estimator. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B469 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.
