This Q-Power 12 inch QBOMB12VL Dual Vented Subwoofer Box Enclosure is designed and built for the deepest bass. It features a dual vented chamber design with a slot port in the middle and boasts 4.5 cubic feet of air space. The Q-Power 12 inch 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 12 inch Subwoofer Enclosure!