The Ronco RVB404 is a 6 gallon light-duty fresh water tank for compact RV service, one of several 6 gallon shapes Ronco molds so that small builds can pick the profile that fits their cabinet or under-seat void. Shipping weight is approximately 11 pounds, easily a one-hand install.
Ronco Plastics has rotationally molded polyethylene tanks in Tustin, California since 1974, and this small tank is made the same way as its 50 gallon siblings: one continuous seamless molding, no joints, no welds. The material is natural FDA-compliant polyethylene, and because it carries no colorant the translucent wall lets you watch the water level fall through the tank itself.
Fittings come installed, not included in a bag. Ronco places spin-weld or threaded fittings per each customer's specification before shipment, its standard practice line-wide, so the RVB404 arrives with fill, vent, and outlet positioned for your plumbing. A drawing, when shown, depicts the blank molding before that step. OneSource Plastics is an authorized Ronco Plastics dealer.