The Q Power 12 inch QBOMB12V dual vented subwoofer box kicks the music up to the next level with deep sounding and powerful bass. The vented sub box is constructed of 0.75 inch Mdf and finished with a black bedliner spray for increased durability and added style. It features a dual vented chamber design with a middle slot port and boasts 1.5 cubic feet of air space per subwoofer. If you are looking to really make the bass hit hard, then turn your ride into a sound machine with the Q Power QBOMB12V 12 inch subwoofer box.