The 60W is the crossover big tank: 58 gallons at 44 x 22 x 15.5 inches, cataloged for RV and marine service in the same breath. Coach builders stand it in a basement bay; boatbuilders lay it beneath a berth flat. The proportions - longer than wide, just over a foot tall - are the ones that fit both worlds without modification, which is why this molding shows up on so many refit drawings.
As a Water / Waste Holding Tank series shell, its job is assigned by the fitting order. Fresh-water fittings: a potable main tank in FDA-compliant polyethylene. Waste fittings: a 58 gallon holding tank sized for real distance between dump stops. The 74 lb empty weight is heavy-wall construction, built for years of full-load service in motion.
Budget for about 484 lb of water when full, at 8.34 lb per gallon - through-bolted mounting over frame or stringers, nothing less. The same envelope in light-duty potable trim is the RV60W; the surrounding large-format field is in the RV water tanks category and under boat tanks.
Rotomolded in Tustin, California since 1974. Fittings are installed per order - spin-weld or threaded, exactly where you mark them: print the drawing below or use the click-to-place fitting planner. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics 60W 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.
