The B248 runs 48 x 20 x 17 inches - a four-foot bay-length tank that puts 65 gallons under an RV floor while leaving the bay's upper half free for everything else. It is the shape for coaches and trailers where water has to share space: long enough to use the bay's depth, low enough that storage still stacks above it.
The molding ships at a substantial 101 lb, wall thickness earned by that four-foot unsupported span, and holds about 542 lb of water when full. Bed it continuously along its length so the middle cannot sag between end supports, and strap it against the fore-and-aft surge a quarter ton of water generates under braking.
As a B-series dual-role blank, the B248 becomes what your fitting order says: potable fresh supply in food-grade polyethylene, or gray and black holding in the identical shape. Print the drawing below, mark each fitting location, and the on-page fitting planner will spec the spin-weld or threaded fittings Ronco installs per order - Tustin, California work, as it has been since 1974. Related footprints are in RV water tanks and RV holding tanks; the maker's full range is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B248 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.
