The Camco Propane Tank is composed of heavy-duty polypropylene to promote durability and longevity. It was specifically engineered to protect bottles from flying debris to provide safe travels as you're cruising along. This voluminous 30 pound propane tank cover also sports a sleek constitution to streamline the look of your rig. In addition, it is simple to assemble. It takes only 15 minutes to install with the help of the supplied hardware. This double propane tank cover fits onto 20&30# steel rigs. Simply slip the custom molded assembled unit over the bottles for a safe, secure fit. Since it also spends extensive amounts of time exposed to the elements, this tank cover offers powerful UV protection to prevent sun damage. The updated design of the Camco Propane Tank provides easier access to gas valves and changeover valves.