The 69W widens the low-profile formula: 48 x 20 x 8 inches, 28 gallons. Same eight-inch height as Ronco's narrow planks, but at 20 inches across it trades corridor-thin for a broad, shallow sheet of water - the shape for underfloor spans in trailers and vans where width is available but every inch of height above the frame is contested.
Dual-role by series - Water / Waste Holding Tank - it takes fresh-water fittings to become a potable tank in FDA-compliant polyethylene, or waste fittings to become a 28 gallon gray tank thin enough to live directly beneath the wet bath it drains.
Eighteen pounds empty; about 234 lb full at 8.34 lb per gallon of water, spread over a four-foot sheet - the kind of distributed load that underfloor framing handles gracefully when the tank bears on more than two points. Narrower and taller routes to the same capacity are in the RV water tanks category, with waste-side equivalents under RV holding tanks and the marine family at boat tanks.
Rotomolded in Tustin, California 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 69W 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.