Shelter Adjustable Black Galvanized Steel Single Flue Chimney Cap for Large Flue

24-gauge single-piece galvanized steel hood. 18-gauge 3/4″ expanded galvanized steel mesh. Black powder-coated paint finish. Stainless steel mounting brackets. Quick and easy installation (with only a screwdriver). Keeps out birds, squirrels, leaves, and debris. Protects flue from moisture. 1 cap fits several flue tile sizes: 13″ x 13