Give your GM or Chevy crew cab pickup truck a boost of audio power with the Q Power 2 Hole 12 Inch Ported Subwoofer Enclosure for 2007 2013 GM/Chevy Crew Cabs. This up firing under seat sub box fits perfectly for model years 2007 2013, and gives you the perfect platform to install 12 inch subwoofers for high quality bass.This subwoofer enclosure is ported, and features 2 openings for 2 subwoofers to be installed into. A mounting depth of 5.5 inches gives you added flexibility and it is finished with durable bed liner. Put a better box in your truck to get more out of your audio with the Q Power 2 Hole 12 Inch Ported Subwoofer Enclosure for 2007 2013 GM/Chevy Crew Cabs. | Qpower | | Dual 12" Sub Box | Chevy Silverado Crew Cab & GMC Sierra Crew Cab 07-13 | Black | Best Buy