Take your music to the next level with the Q Power 12 inch subwoofer enclosure, that is custom compatible with GMC or Chevy non HD crew cab trucks, model years 2004 to 2006. This subwoofer box is designed to fit behind your seat after removing the factory jack. It boasts 0.60 cubic feet of air space per sub and can hold subs up to 5.5 inch deep. Constructed out of 0.625 inch MDF wood and featuring premium carpet covering, this sealed sub box provides you with tight sounding bass. So turn up the bass, without compromising the music with the help of the Q Power 12 Inch 2004 2006 Subwoofer Enclosure compatible with GMC and Chevy.