The B128 is a tube with corners: 34 x 12 x 12 inches, a foot-square section stretched nearly three feet long, carrying 22 gallons down spaces where nothing wider will pass. Keel lines, frame-rail channels, the gap behind a wheel arch - this is the dual-role molding for the long narrow void, at home equally in a hull or a camper.
Order fresh fittings and it is a potable tank in FDA-compliant polyethylene; order waste fittings and it is a slim holding tank. It ships as a clean blank either way, plumbed for nothing until you choose. Empty it is 23 lb - easy to thread into its channel solo - and full it holds about 183 lb at 8.34 lb per gallon, spread low and long the way a narrow bay likes it.
Ronco has molded in Tustin, California since 1974, installing every fitting per order: print the drawing below, mark the spin-weld or threaded locations along its length, or click them onto the on-page fitting planner. More long-and-narrow thinking lives in boat tanks and RV water tanks; everything else is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B128 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.
