These 2 Q Power QTW10 Single 10-Inch Sealed Car Audio Subwoofer Box Enclosures feature solid 5/8-inch MDF construction, charcoal carpet covering, terminal cup connectors, 0.9 cubic feet of air space per Box, and a mounting depth of 4.75-inches. Turn your ride into a sound machine with the help of the Q Power QTW10 Single 10-Inch Sealed Car Audio Subwoofer Sub Box Enclosures! These boxes are designed and built for the deepest bass even in tight spots in your car, truck or other vehicle.