Ten gallons, six pounds. The B100 is the smallest kind of marine tank Ronco molds - a dual-role blank that becomes either a fresh water tank or a waste holding tank depending on the fittings you order. On a day-sailer, a center console, or a small trawler's second head, ten gallons is often exactly the job: enough for a weekend's washdown water or a compact holding system, small enough to fit where nothing else does.
Order it fresh and you get FDA-compliant polyethylene rated for potable water; order it as a holding tank and the same seamless wall handles waste duty without complaint. Nothing is plumbed until you say so. Even full it stays manageable - about 83 lb of water at 8.34 lb per gallon - and at 6 lb empty it is a one-hand install anywhere on the boat.
Ronco has rotomolded in Tustin, California since 1974, and every tank leaves with fittings installed per order: spin-welded or threaded to the marks you make. Print the drawing below and mark your fitting spots, or place them on the on-page fitting planner. The rest of the marine line is in boat tanks, and the complete catalog is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B100 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.
