This Q-Power 12″ QBOMB12VL Single Vented Subwoofer Box Enclosure is designed and built for the deepest bass. It features a single vented chamber design and boasts 1.8 cubic feet of air space. This 12″ 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″ Subwoofer Enclosure! If you want the most output for your money, this is the way to go.