Seventy-five gallons is expedition capacity - the 61W at 54 x 22 x 16 inches is the tank for rigs that measure trips in weeks. Four and a half feet long and 16 inches tall, it fills the long bay of a toy hauler or the belly compartment of a converted coach, and its 79 lb empty weight announces heavy-wall molding before you ever read a spec sheet.
It is a Water / Waste Holding Tank series shell, so the capacity serves whichever side of the system is your bottleneck. Fresh-water fittings make it a potable tank in FDA-compliant polyethylene - drinking water for a crew, not a couple. Waste fittings make it one of the largest holding tanks Ronco molds, for builds where the dump station is a long way from the job.
Full, it is about 626 lb of water at 8.34 lb per gallon: plan frame-bearing, through-bolted mounting, low and between axles, before the tank arrives. The same envelope in light-duty potable form is the RV61W; the rest of the large-format field is in the RV water tanks category and RV holding tanks.
Rotomolded in Tustin, California since 1974. Fittings are installed per order - spin-weld or threaded, to your marks: print the drawing below or place them on the click-to-place fitting planner. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics 61W 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.
