Fits two 8 or 10 inch subwoofers MDF construction Fits behind seat Recommend speaker grills Remove jack and tools Air Space = .60 cubic foot Per Sub Mounting Depth = 5 1/8" Mounting Depth based on 6" diameter magnet Box divider and speaker terminals included Hole cutout for 8" Sub = 7" Hole cutout for 10" Sub = 9 1/8" Subwoofers and/or amplifiers not included Made in the USA