An open-top cylindrical tank is only half a product until you can close it. The 17COVER is the molded polyethylene lid for Ronco's 17 gallon cylindrical tank: it drops over the open rim to keep dust, debris, splash, and curious hands out of whatever the tank is holding, while lifting off in a second when you need full access to the opening.
It is molded from the same weather-resistant polyethylene as the tank itself, so it shrugs off sun, wash water, and the chemicals a detail rig or shop tank sees daily. At 3 lb it adds nothing meaningful to the installed weight and ships parcel like any small package.
Match it to its tank in the Ronco Plastics lineup, and if you are ordering the tank and cover together, the freight estimator will price the pair to your ZIP.
Like every Ronco molding, it comes out of the Tustin, California plant that has been making tanks and their hardware since 1974. OneSource Plastics is an authorized Ronco Plastics dealer.