Upgrade your truck's audio system with the Q Power QBGMC07210 Dual 10" Down-Firing Subwoofer Enclosure. Designed specifically for 2007-2013 Chevrolet Silverado and GMC Sierra Extended Cab trucks, this custom-fit enclosure provides powerful bass performance while maintaining valuable interior space. The down-firing design helps protect your subwoofers from cargo and everyday wear while delivering deep, impactful low-frequency response throughout the cabin. Features Custom-Fit Dual 10" Subwoofer Enclosure Designed for 2007-2013 Chevy Silverado & GMC Sierra Extended Cab Trucks Down-Firing Subwoofer Configuration Premium MDF Construction Durable Charcoal Automotive Carpet Finish Under-Seat Installation Factory-Like Appearance Optimized Airspace for Maximum Bass Performance Protects Subwoofers from Damage No Major Vehicle Modifications Required Specifications Part Number: QBGMC07210 Enclosure Type: Down-Firing Subwoofer Size: Dual 10" Construction Material: 5/8" MDF Finish: Charcoal Automotive Carpet Configuration: Dual Chamber Mounting Location: Under Rear Seat Vehicle Application: Extended Cab Trucks Speaker Orientation: Down-Firing Vehicle Compatibility Fits: Chevrolet Silverado 1500 Extended Cab (2007-2013) Chevrolet Silverado 2500HD Extended Cab (2007-2013) Chevrolet Silverado 3500HD Extended Cab (2007-2013) GMC Sierra 1500 Extended Cab (2007-2013) GMC Sierra 2500HD Extended Cab (2007-2013) GMC Sierra 3500HD Extended Cab (2007-2013) Note: Designed for Extended Cab models. Verify subwoofer mounting depth compatibility before purchasing.