ASC Ford F150 Extended Super Cab Truck 2009-2014 Dual 10" Subwoofer Custom Fit Sub Box Speaker Enclosure Dimensions: Width 50-1/2" x Front Height 5" x Rear Height 9" x Depth 14-1/4" Install Location: Under Rear Seat Install Notes: No Modifications Required Mounting Depth: 5 Inches Air Space: 0.80 Cubic Feet