The Q-Power 15-Inch Dual Heavy Duty Vented Subwoofer Enclosure features solid 5/8-inch MDF construction, charcoal carpet covering, a dual vented design, and terminal cup connectors. Turn your ride into an incredible sound machine with the help of the Q Power 15-Inch Dual Heavy Duty Vented Subwoofer Enclosure. If you want the most output for your money, this is the way to go. Q Power provides top quality speaker boxes and accessories, and the QPower QBASS15 is no exception. Impress your friends and family with your 15" woofers that will hit hard in this enclosure!