Air Venturi Trap Backstop, 10-Gauge Steel This item includes only the steel backstop -- not the trap, duct seal or paper targets 10-gauge steel backstop - 9.75" x 10.75" Use with the Air Venturi AGE Quiet Pellet Trap that does not come with a steel backstop or use as a replacement if your trap's steel backstop has been compromised Insert behind the duct seal in your AGE Quiet Pellet Trap For guns up to 20 ft-lbs. muzzle energy