Dimensions: Cutout Diameter 9 1/4" Height 16” Length 48” Top Depth 5 1/2” Bottom Depth 9 1/2” Mounting Depth 7” 36 hertz 5/8" MDF WOOD Installation: Fits Behind the seat Front Firing *IMPORTANT* - Due to size and weight, this item CAN NOT ship to PR, PO BOX, APO, Guam, Virgin Islands, Alaska, and MP. For Hawaii customer will have to pay for shipping cost.