The Q-Power QBOMB8V Dual 8-Inch 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 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 QBOMB8V Dual 8-Inch Vented Subwoofer Box.