The Q Power 10" Q Bomb Sub Box Enclosure is compatible with GMC and Chevy Avalanches. This enclosure is designed to fit underneath the rear seats, boasts .5 cubic feet of air space and has divided chambers. The Q Power 10" Q Bomb subwoofer box is finished with a black bedliner spray for increased durability. Turn your ride into a sound machine with the help of the Q Power 10" Subwoofer Enclosure! If you want the most output for your money, this is the way to go.