Nine gallons, 18.5 x 17 x 7.5 inches, 14 lb out of the box. The B532 is the tank you fit after everything else is installed - a shallow, almost-square molding that drops into the last usable void under a bunk or console and adds real capacity to a small boat or camper conversion without redesigning anything.
It shares the B-series dual-role construction: the same blank becomes a fresh water tank or a gray/black holding tank depending on the fittings you order. In fresh service the resin is FDA approved for potable water. Ronco spin-welds or thread-installs the fittings to your marked locations before shipping, so plan the ports first - print the drawing below, mark where the hoses genuinely want to land in that cramped corner, and record the layout in the fitting planner on this page.
Full weight is about 75 lb, which nearly any flat, supported surface carries - just strap it so it cannot walk in chop. Molded in Tustin, California; Ronco has built small marine tanks alongside their big ones since 1974, on the same resin and the same standard.
Neighboring small sizes are in the boat tank category and RV holding tanks; browse the entire Ronco line on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B532 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.
