Bbox A164-10CP Dual 10" Sealed Carpeted Subwoofer Enclosure - Fits 2003-2007 Chevrolet/GMC Silverado/Sierra Crew Cab Cutout Diameter - 9.125" Max Mounting Depth - 5.5" Net Volume - 1.08" (Front Height) 6.5" x (Rear Height) 4.5" x (Width) 42.25" x (Depth) 12.5" x (2nd Depth) 12" Premium Charcoal Carpet