Two hundred gallons is the top of this family, and the Ronco Plastics B485 carries it in a nearly cubic 42 x 34.25 x 34.25 inch molding. This is base-camp, work-vessel, and support-trailer capacity, the tank you buy when refilling is a logistics event rather than an errand.
Even at this size the B-series rules hold: the shell is dual-role, and the fittings you order make it either a potable fresh water tank in food-contact polyethylene or a very large gray or black waste holding tank. Nothing is pre-drilled. Ronco installs each fitting per order, spin-welded or threaded, at coordinates you take from the printed drawing below and confirm in the on-page fitting planner.
Now the sobering arithmetic: 200 gallons of water at 8.34 lb per gallon is about 1668 lb, before the tank's own 148 lb. Whatever carries this tank must be engineered for it, and whatever it sits in should be checked for point loading at the corners of that footprint.
Molded in Tustin, California by Ronco Plastics, doing this work since 1974. A piece this size makes freight planning essential, so start with the freight cost estimator, then compare the rest of the Ronco catalog and marine line. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B485 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.
