Fits 2000-2006 Chevy 1500 Crew Cab and GMC Sierra 1500 Crew Cab * Location: Behind rear seat, jack is relocated (hardware included). * Loaded with Single 10" 225 Watt RMS Terminator Subwoofer * Installation Hardware & Instructions Supplied. Dimensions: 11¾"H x 31½"W x 7¾"D * Subwoofer Mounting Depth: 5-11/16", Enclosure Volume .9 cu ft