Chevy Silverado/ GMC Sierra Crew Cab Single 12" Subwoofer Enclosure Sub Box 2008-2013 Chevy Silverado/ GMC Sierra Crew Cab Single 12" Subwoofer Enclosure Sub Box 2008-2013 Enclosure Volume (Cubic Feet Per Chamber): .83 Cu. Feet/ Mounting Depth: 5-1/2 High Quality Terminal Cups (accepts Banana Plugs or Bare Wire Quality Black Wrapping Carpet This Enclosure Fits: Chevy Silverado/ GMC Sierra Crew Cab 2008-2013 (Will Fit New Body 2007 Model) Fitment: Fits Under Rear Seat- Driver Side