ASC Ford F150 Extended Super Cab Truck 2000-2003 Dual 12" Subwoofer Custom Fit Sub Box Speaker Enclosure Dimensions: Width 49-1/4" x Height 8-1/4" x Depth 11-3/4" Install Location: Under Rear Seat Install Notes: Relocation or Removal of Jack is required Mounting Depth: 5-3/4 Inches Air Space: 0.75 Cubic Feet