Fits 2005-2014 Ford Mustang Coupe Area Provided on the Back of the Box for Amplifier Mounting Will not fit Convertible Hole cutout for 8" Sub: 7 1/8" Hole cutout for 10" Sub: 9 1/8" Hole cutout for 12" Sub: 11 1/8" Subwoofer Mounting Depth: 9.00" Dual Subwoofers Airspace: 0.85 cubic ft. Per Sub/Chamber Single Subwoofer Airspace: 0.85 cubic ft. Made with 0.75" MDF Speaker Wire Terminals: 1 Per Subwoofer Box Type: Sealed Box Box Finish - Carpet Installed Pictures Shown in Charcoal Grey Subwoofers & Amps Not Included Hole Cutouts adjustable per request Dual Subwoofers airspace can be reduced if requested Single Subwoofers airspace can be changed from .625-1.70 if requested Install tip......with the subwoofer holes facing upward install the driver side of the box in the trunk first and adjust into place. Its a tight fit so we recommend installing the subs after the box is inserted into the trunk.