Fourteen and a half inches wide is the number that gets the B231 into boats and vans that reject wider tanks. At 28.25 x 14.5 x 11.5 inches it is a slim 20 gallon molding drawn for the corridor spaces - alongside keelsons, between frame rails, down the narrow chases of a van conversion - where capacity has to travel single file.
Like the rest of Ronco's dual-listed shells, it serves marine and RV systems as fresh water or waste holding, and only your fitting order decides which. Fresh duty runs on FDA-compliant, potable-rated polyethylene; waste duty uses the same seamless rotomolded wall. It ships unplumbed: print the drawing below, mark the penetrations for the system you are building, or drop them onto the on-page fitting planner, and the shop spin-welds or thread-installs each fitting to your marks before it leaves Tustin, California - per-order work the company has done since 1974.
At 22 lb empty, one person seats it in the chase without help. Full, it carries about 167 lb at 8.34 lb per gallon along its 28.25 inch length, so bear the bottom continuously and strap through to structure at both ends. Slim tanks amplify slosh on the narrow axis; snug straps quiet it.
Slim alternatives live in the boat tank category and RV water tanks; the complete range is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B231 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.
