The B269 is a 4 gallon torpedo: 17.62 x 8.25 x 7.88 inches, longer than it is wide or tall, built for the tunnel-shaped voids behind kick panels, along chassis rails, and under gunwale edges. Where the square small tanks need a cube of space, this one needs a slot.
Four gallons is single-fixture capacity - a hand sink, a rinse sprayer, a header feed - and the B-series dual-role design covers both directions: potable fresh in food-grade polyethylene when fresh-fitted, or a gray water catch when fitted for waste. It ships as a blank; print the drawing below, mark where the fittings land on your slot's accessible face, and the on-page fitting planner specs the spin-weld or threaded fittings Ronco installs per order.
The molding weighs 8 lb and about 33 lb full, so installation is a bracket and a strap. It comes out of the same Tustin, California plant that has molded every Ronco tank since 1974. Larger slots and larger tanks are in our boat tank category; the whole catalog is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B269 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.