Bbox A131-10CPV Single 10" Vented Carpeted Subwoofer Enclosure - Fits 2007 - up Chevrolet/GMC Silverado/Sierra Extended Cab Cutout Diameter - 9.125" Max Mounting Depth - 6" Net Volume - 0.86" (Front Height) 6.875" x (Rear Height) 6.25" x (Width) 27.25" x (Depth) 11.875" x (2nd Depth) 14.25" Premium Charcoal Carpet