Q Power QBFORD10 2004 Ford 2004-2008 F-150 Dual 10" Subwoofer Box UnderSeat Downfire Dual 10" Sealed Downfiring - Unloaded Subwoofer Box For 2004-2008 Ford F150 Xcab/Super Crew Trucks This Enclosure is Constructed Out of High Grade 3/4" MDF Wood Covered and Finished with a Durable Bed Liner Coating Constructed with High Quality Spring Loaded Terminals