Fits two 8 inch subwoofers MDF construction Fits behind the seat Air Space = .45 cu ft per sub Mounting Depth = 5.00" (5 5/8" available) Mounting Depth based on 6" diameter magnet Speaker terminals included Hole cutout for 8" Sub = 7" Subwoofers and/or amplifiers not included Charcoal Grey Pictured Subwoofers & Amps Not Included Hole Cutouts adjustable per request Subwoofer Mounting depth based on the most common size subwoofers. Some Subwoofers with oversized framing/magnets may not fit without modification. If you're using a subwoofer that is close to the max specs please contact us for fitment confirmation.