Where most small fresh tanks go tall, the RV21W goes flat: 8 gallons spread across 17.75 x 15.75 inches while standing only 8.25 inches high. That squat, nearly square footprint is built for under-bench and under-bunk mounting, where every inch of height is an inch stolen from storage.
This is potable-water light duty - FDA-compliant natural polyethylene with a translucent wall, so the water level shows through the shell. The 8 lb tank carries about 67 lb when brimmed, and the low profile keeps that mass close to the floor where it belongs in a moving vehicle.
Compare it against the 8-gallon RV41W at 17 x 12.75 x 10 inches, the taller twin at the same capacity, or step to the 9-gallon RV31W if you can use a touch more volume. Every one is rotomolded in Tustin, California, where Ronco Plastics has run since 1974, with fittings installed to order - spin-weld or threaded. Print the drawing below and mark your fitting locations, then browse the full RV water tank range or the complete Ronco Plastics line.
OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics RV21W 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.
Freight
LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.
