ASC Ford F150 Super Crew Cab Truck 2009-2014 Single 12" Subwoofer Custom Fit Sub Box Speaker Enclosure Dimensions: Width 26" x Depth 14" x Front Height 9" x Back Height 6" Install Location: Under Rear Seat Install Notes: No Modifications Required Mounting Depth: 6-1/4 Inches Air Space: 0.80 Cubic Feet