The Bbox A164-10CP 10 inch dual sealed subwoofer enclosure is designed for optimum bass response and low frequency reproduction which is ideal for lower profile sound quality subwoofers. The duel 10 inch subwoofer box is designed and engineered specifically for 2003-2007 Light Duty Chevrolet / GMC Silverado / Sierra Crew Cab trucks to ensure an OEM fit without impeding the operation of the back seat. Built with a durable high-grade MDF that is 5/8 inches thick, the thick MDF panels and no flex construction on our 10 inch subwoofer box. Our subwoofer box are airtight and resonant free to reduce rattles in your subwoofer and improve the overall sound quality of your sound system. Dimensions Sub cut out: 9.125”, sub mounting depth: 5.5”, height: 6.5” width: 42.25”, depth: 12.5”