ASC Ford Explorer Sport Trac Truck 2001-2006 Single 10" Subwoofer Custom Fit Sub Box Speaker Enclosure Dimensions: Width 22-3/16" x Height 5-5/8" x Depth 10-1/2" Install Location: Under Rear Seat (Passenger Side) Install Notes: No Modifications Required Mounting Depth: 5-5/16 Inches Air Space: 0.45 Cubic Feet