Q Power QBFORD09F350110 Single 10" Vented Subwoofer Enclosure for 2000-2016 Ford F-250/F-350/F-450 Super Duty Trucks 2000-2016 Ford F250/350/450 Super Duty Single 10" Ported Subwoofer Box Enclosure Behind Seat, Removal of Jack Kit, Rear Seat Belt Cover & Rear Carpet is Required. Power Window motor needs to be removed during installation. Finished with Durable Bed Liner. F250/F350/F450/F550 Super Duty Crew Cab. Material: Highest-grade MDF wood on the market Mounting Depth: 4.5 (inches). Mounting diameter (hole size): 9 (inches). Wood thickness: 5/8 (inch). Air space: 1.4 Cubic feet ****Fits behind seat. For installation permanent removal of jack kit, rear seat belt cover and rear carpet is required. Power window motor will need to be removed during installation.