ADCO's Tank Covers boast the Game Creek "Oaks" design to help safeguard your trailer's propane tank from the negative effects of the environment. Left unprotected, LP tanks are prone to damage, with possible failure and or replacment of its components. Investing in an ADCO cover is a cost-effective measure to prolong the life of your equipment and save long-term. To purchase the right cover for your tank, take note of its capacity (e.g., 20 lb, 30 lb or 40 lb) and whether it's single or double.