ASC Ford F250 or F350 Extended Super Cab Truck 2001-2014 Dual 10" Subwoofer Custom Fit Sub Box Speaker Enclosure Dimensions: Width 50-3/4" x Height 6-3/4" x Depth 10-3/4" Install Location: Under Rear Seat Install Notes: Jack handle must be removed, but jack stays Mounting Depth: 4-3/4 Inches Air Space: 0.95 Cubic Feet