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    QBGMC12 DF

    Dual 12" Subwoofer Enclosure – GM/Chevy Extended Cab

    The QBGMC12 DF is a vehicle-specific subwoofer enclosure designed to fit neatly under the rear seat of GM and Chevy Extended Cab trucks. Its down-firing configuration delivers deep, controlled bass while helping protect the subwoofers from daily wear, making it an ideal solution for a clean and functional install.

    Built for durability, this enclosure features a rugged bed-liner finish that resists moisture, scuffs, and heavy use. The precision under-seat design maximizes available cabin space while providing consistent low-frequency performance tailored to extended cab interiors.

    Key Features:

    • Dual 12" subwoofer configuration (2-hole design)

    • Under-seat, down-firing enclosure for enhanced bass response

    • Durable bed-liner finish for long-lasting protection

    • Space-saving design that fits cleanly under the rear seat

    • Optimized internal volume for accurate bass output

    Vehicle Fitment:

    • 1999–2006 GM/Chevy Extended Cab (Xcab only)

    • Does NOT fit Crew Cab models

    Specifications:

    • Air Space: 0.95 cubic feet per sub

    • Maximum Mounting Depth: 5.5 inches

    Available from Ultimate Marketing, this enclosure is an excellent choice for Extended Cab truck owners looking for powerful bass performance with a rugged, vehicle-specific design.