Four feet ten inches of tank. The 43W runs 58 x 20 x 13 inches, laying 58 gallons out in a single long rail that follows a chassis frame, a bus bay, or the length of a keel. Where its square-format siblings need a wide bay, this one needs a corridor - and coach and sailboat builders have corridors to spare.
The 79 lb empty weight tells you how it is built: heavy wall, molded for a service life spent full and in motion. And as a Water / Waste Holding Tank series shell, that service is your call - fresh-water fittings make it a potable tank in FDA-compliant polyethylene; waste fittings make it a long-haul gray or black holding tank of serious capacity.
Do the full-load math before choosing the mounting hardware: about 484 lb of water at 8.34 lb per gallon, distributed along nearly five feet. Support it across multiple crossmembers. The same envelope in light-duty potable trim is the RV43W; other large geometries fill the RV water tanks category and the boat tanks range.
Rotomolded in Tustin, California, Ronco's only home since 1974. Fittings are installed per order - spin-weld or threaded, to your marks: print the drawing below or place them with the click-to-place fitting planner. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics 43W 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.