Ninety-five gallons turns an RV into something closer to a cabin: long stays off hookups, real showers, no water anxiety. The B354 carries that capacity in a 47 x 33 x 16 inch molding whose proportions are the interesting part - wide and low rather than long and tall, so the roughly 792 lb it holds when full rides as a flat, stable layer above the chassis instead of a tall column that wants to move. For a coach or toy hauler with underfloor bay space, this is the shape that scales up without scaling wrong.
It is a fresh water tank first: FDA-compliant polyethylene molded for potable supply, from the Tustin, California plant where Ronco has rotomolded since 1974. Like every B-series blank it ships bare, with fittings spin-welded or thread-installed to your marks - fill, vent, outlet, level sender, wherever your plumbing plan puts them. Print the drawing below, work through the fitting planner on this page, and the tank arrives matched to your bay and your hose runs, not to a generic floor plan.
At 118 lb empty and nearly four feet long, delivery is real freight - get a ZIP quote from the freight cost estimator before checkout. Compare the other large fresh moldings in RV water tanks, look at hull-bound equivalents in boat tanks, or browse the full line on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B354 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.
