Hole cutout for 10" Sub: 9 1/8" Hole cutout for 12" Sub: 11 1/8" Subwoofer Mounting Depth: 10.00" Dual Subwoofers Airspace: 1.25 cubic ft. Per Sub/Chamber Single Subwoofer Airspace: 1.25 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 .80-2.50 if requested