Bring on the bass with the help of this Q Power 12" QBOMB12TB Double Triangle Ported Car Audio Subwoofer Sub Box Enclosure. Designed and built for the deepest bass, the enclosure features a double ported design and boasts 2.2 cubic feet of air space per subwoofer. Made with 3/4 inch MDF wood, this brand new high quality sub box has high quality spring loaded terminals and a durable bed liner finish. The Q Power QBOMB12TB comes with a 1 Year Manufacturer Warranty.