The QPower Dual 12-Inch Subwoofer Box is Compatible with 2004, 2005, 2006, 2007, and 2008 Ford F-150 SuperCrew trucks, and offers a reliable way to achieve powerful, consistent bass performance. With an 11-inch cutout diameter, this subwoofer enclosure is built to fit standard 12-inch speakers, giving you the opportunity to upgrade your vehicle's sound system with ease. Whether you're commuting or taking long trips, this sealed speaker box supports clear, high-quality audio that enhances every drive. Its low-profile structure and underseat configuration allow the box to fit neatly within an interior arrangement, maintaining legroom and preserving other storage compartments. The precision-cut dual chambers measure 9 in (W) × 52 in (H) × 16 in (D), offering a 4.5-inch mounting depth that simplifies installation. Each chamber provides 0.7 cubic feet of airspace, giving your subwoofers the room they need to produce tight, controlled sound output. Made from sturdy 3/4-inch MDF, the enclosure offers the rigidity required to handle deep bass without unwanted vibration. Its durable bed-liner finish adds an extra layer of protection, helping the sound box withstand the demands of everyday driving while reducing resonance for cleaner audio. Engineered for strength, fit, and performance, this subwoofer box delivers a dependable foundation for a richer, more immersive car audio experience.