Q-Power QBomb 15 Inch Dual Sealed Car Subwoofer Sub Box Enclosure | QBOMB15S Qpower Dual 15" Sealed Woofer Enclosure withh Bed Liner Spray Finished with Durable Bed Liner 3/4" MDF High Quality Spring Loaded Terminals Air Space: 2 Cubic Feet (per sub) Mounting Depth: 14.25"