Seven inches tall, 48 gallons. The B229 is the extreme end of the low-profile art: a 68.5 x 27 x 7 inch panel of a tank that lies flat where no conventional tank fits at all - under cockpit soles, beneath coach floors with belly-pan clearance only, across the shallow flats above a keel. Capacity like this from seven inches of height is the specific advantage rotomolding was invented for.
Ronco lists it for marine and RV duty, water or waste, and ships it as an unplumbed blank; your fitting order writes its job description. Fresh service gets FDA-compliant potable-rated polyethylene, holding service gets the same seamless shell. At this geometry, fitting placement is the whole game: with 7 inches of depth over a 68.5 inch run, the tank's installed pitch decides where the last gallons pool, so study the drawing below, decide which end sits low, and put the pickup or dump there. Mark it on the print or on the on-page fitting planner and Ronco spin-welds or thread-installs to your marks.
It ships at 111 lb, and full it spreads about 400 lb (8.34 lb per gallon) across nearly thirteen square feet - the gentlest structural footprint in its class. Support it continuously; a panel tank must not bridge gaps. Rotomolded in Tustin, California, where Ronco has made improbable shapes routine since 1974.
Other shallow moldings live in the boat tank category and RV holding tanks; see everything on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B229 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.
