Add powerful bass to your truck without sacrificing interior space with the Q Power QBGMC17212 Dual 12" Down-Firing Subwoofer Enclosure. Designed specifically for 2014-2018 Chevrolet Silverado and GMC Sierra Crew Cab trucks, this custom-fit enclosure installs neatly beneath the rear seat, delivering impressive low-frequency performance while maintaining a clean, factory-style appearance. Built from durable MDF and finished in premium automotive carpet, the QBGMC17212 is engineered for both performance and durability. Features Custom Vehicle-Specific Dual 12" Subwoofer Enclosure Designed for 2014-2018 Chevy Silverado & GMC Sierra Crew Cab Trucks Down-Firing Design Protects Subwoofers Premium MDF Construction Under-Seat Installation Durable Automotive Carpet Finish Factory-Style Fit and Appearance Optimized Internal Airspace for Strong Bass Performance No Major Vehicle Modifications Required Ideal for Daily Driver and High-Output Audio Systems Specifications Part Number: QBGMC17212 Enclosure Type: Down-Firing Subwoofer Size: Dual 12" Construction Material: 5/8" MDF Finish: Charcoal Automotive Carpet Configuration: Dual Chamber Design Mounting Location: Under Rear Seat Vehicle Application: Chevrolet Silverado & GMC Sierra Crew Cab Speaker Mounting Orientation: Down-Firing Vehicle Compatibility Fits Select: Chevrolet Silverado 1500 Crew Cab (2014-2018) Chevrolet Silverado 2500HD Crew Cab (2015-2019 Classic Body Style) Chevrolet Silverado 3500HD Crew Cab (2015-2019 Classic Body Style) GMC Sierra 1500 Crew Cab (2014-2018) GMC Sierra 2500HD Crew Cab (2015-2019 Classic Body Style) GMC Sierra 3500HD Crew Cab (2015-2019 Classic Body Style) Note: Verify subwoofer mounting depth and vehicle fitment prior to installation.