The Q-Power 10" Dual Sealed Car Audio Subwoofer Box Enclosure features solid 5/8" particle board construction, a dual chamber design, charcoal carpet covering, and 1.4 cubic feet of air space per chamber (2.8 cubic feet total). Turn your ride into a sound machine with the help of the Q-Power 10" Dual Sealed Car Audio Subwoofer Box Enclosure! If you want the most output for your money, this is the way to go. Your subs will hit really hard in this 10" subwoofer box. We are an authorized Q-Power dealer