The 52W is the middle plank: 60 x 16 x 8 inches, 28 gallons. Five feet of tank, eight inches of height. It shares its 16 inch wide, 8 inch tall cross-section with the shorter and longer tanks on either side of it in the line, so a builder can pick capacity purely by available length - the framing detail never changes.
Series: Water / Waste Holding Tank, Ronco's dual-role designation. Order it with fresh-water fittings and it is a potable tank in FDA-compliant polyethylene running the length of a chassis or bilge. Order waste fittings and it is a 28 gallon gray or black holding tank with the lowest profile in its capacity class.
It weighs 19 lb empty and about 234 lb full (water at 8.34 lb per gallon), and a five-foot span of water wants support at several stations along the run. The whole plank family and its stubbier cousins are in the RV water tanks category; waste-dedicated shapes are under RV holding tanks; the marine uses of this exact geometry are at boat tanks.
Rotomolded in Tustin, California, as Ronco has done since 1974. Fittings are installed per order - spin-weld or threaded, 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 52W 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.
