The Ronco Plastics B175 packs 13 gallons into a 20 x 13 x 13 inch cube that ships at just 16 lb - small enough to install in spaces most people would not call a tank bay at all. It belongs to Ronco's marine water / waste series, so the little shell covers either assignment: ordered with potable fittings it is a fresh water tank in FDA-compliant polyethylene; ordered with waste fittings it is a 13 gallon gray or black holding tank for a compact boat or camper that needs legal, contained waste storage in almost no space.
The duty you pick shapes the ports, and the ports are yours to place: Ronco installs fittings per order, spin-welded or threaded at your marks. In a cube this size, an inch of port position decides whether the tank drains fully, so print the drawing below, mark the layout against your actual compartment, and finalize it in the fitting planner on this page.
Full of water it carries about 108 lb - a load out of all proportion to the 16 lb shell, and the reason even small tanks get strapped down properly. Molded in Tustin, California, on a line running since 1974. Larger dual-role shapes are under boat tanks, holding-duty context at RV holding tanks, and the full catalog at the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B175 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.
