The QBGMC142104DR is a custom-fit ported downfire subwoofer enclosure designed specifically for 2014-2018 Chevrolet Silverado and GMC Sierra Crew Cab trucks. Built for strong low-frequency output while preserving factory cabin space, this enclosure combines high-output bass performance with a stealthy OEM-style fit. Features & Benefits Custom-fit enclosure for 2014-2018 GM Crew Cab trucks Designed for dual 10-inch subwoofers Ported downfire enclosure configuration Underseat mounting design Durable spray-on bedliner finish High-output bass performance Maximizes cabin space while adding deep bass OEM-style fit and appearance Excellent for daily-driver and SPL-oriented systems Specifications Product Type: Vehicle-Specific Subwoofer Enclosure Model: QBGMC142104DR Subwoofer Compatibility: Dual 10-inch subwoofers Enclosure Type: Ported / Downfire Vehicle Fitment: 2014-2018 Chevrolet Silverado Crew Cab 2014-2018 GMC Sierra Crew Cab Mounting Location: Under rear seat Construction Material: MDF wood Finish: Durable spray-on bedliner coating Maximum Mounting Depth: 5 inches Air Space: 1 cubic foot per subwoofer Tuning Frequency: 38Hz Configuration: Dual chamber enclosure Vehicle Compatibility Compatible with select: Chevrolet Silverado Crew Cab (2014-2018) GMC Sierra Crew Cab (2014-2018) Designed specifically for full 4-door Crew Cab trucks. Fitment may vary depending on factory storage trays, Bose audio systems, and seat bracket configurations
