Ronco's 9 gallon fresh water family spans several molded shapes, and the RVB321 is the mid-weight member, shipping at about 13 pounds. A light-duty potable tank for RV drinking water systems, it balances wall thickness against handling weight for van builds, campers, and compact trailers.
What you are buying is Ronco's fresh water construction in a small package: natural FDA-compliant polyethylene, molded pigment-free so the translucent wall doubles as a level gauge, formed by rotational molding into a single seamless vessel with no joints in the shell. It is the same recipe Ronco uses on tanks five times this size.
The RVB321 comes from Ronco Plastics' plant in Tustin, California, rotomolding tanks since 1974, and ships with spin-weld or threaded fittings installed per the customer's specification, standard on the entire Ronco line. Any drawing displayed depicts the blank molding before fitting installation. OneSource Plastics is an authorized Ronco Plastics dealer for the RVB321.