Ten inches wide is the whole argument for the 23W. It threads 9 gallons through a 30.25 x 10 x 9 inch channel - between frame rails, along a rocker panel, down the spine of a small boat - places where capacity usually just gets forfeited. Tanks this narrow are how a careful builder finds water storage the floor plan swore it did not have.
As a Water / Waste Holding Tank series molding it swings either way: potable fittings make it a fresh tank in FDA-compliant polyethylene; waste fittings make it a slim gray catch for a wet bath or galley drain. The shell arrives blank and your fitting order decides its career.
It is a 7 lb part empty, roughly 75 lb full (water runs 8.34 lb per gallon) - light enough to fit alone, heavy enough when full to deserve real straps. The RV water tanks category holds its wider cousins, RV holding tanks the dedicated waste shapes, and the same slim profiles do duty as boat tanks.
Rotomolded in Tustin, California, as everything Ronco has made since 1974. Fittings are installed per order - spin-weld or threaded, located where you mark them: print the drawing below or use the click-to-place fitting planner. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics 23W 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.
