Product Features: Custom fit Dual 10" Sealed Unloaded (Down Firing) Subwoofer Enclosure. Fits 2004-2018 Nissan Titan Crew and King Cab. Precision-engineered using state-of-the-art CNC technology for unparalleled craftsmanship and accuracy. Meticulously hand-assembled to ensure the highest quality and attention to detail. Finished with premium carpet for a high-end appearance. Crafted from 3/4" MDF (Medium Density Fiberboard) for enhanced durability and sound performance. Internal volume of 1. 50 cubic feet (0. 75 cubic feet per chamber). Mounting depth: 5. 25". Cutout diameter: 9 3/16". Authorized Internet Dealer. 1-year Manufacturer's Warranty.