HIGH-QUALITY MDF CONSTRUCTION:- Built in the USA with 3/4" Grade A MDF wood, the Rockville RQB12 SQ ensures durability and minimal flexing for optimal subwoofer performance. Precision-cut design maximizes bass output. OPTIMIZED FOR KICKER L7S/L7R:- Specifically engineered for 12" Kicker Solo Baric L7S and L7R subwoofers, this enclosure offers a perfect fit with 1.8 cubic feet of air space and a 43 Hz tuning frequency. DURABLE BEDLINER FINISH:- Coated with a weather-resistant bedliner spray, similar to pickup truck linings, this sub box resists wear and tear while maintaining a sleek, professional look in any vehicle. ENHANCED BASS PERFORMANCE:- The side-ported design and high-quality spring-loaded terminals deliver deep, powerful bass, making it ideal for car audio systems in trucks, SUVs, or compact cars. COMPACT AND EASY TO INSTALL:- Measuring 13.5" H x 22" W x 15" D, this enclosure fits seamlessly in most vehicles, offering a balance of size and performance for bass enthusiasts. Rockville RQB12 SQ Single 12" Side Ported Solo Baric L7S/L7R Sub Enclosure