Q Power FRONTIER10 2005 Dual 10 Inch Down Firing Subwoofer Enclosure For 2005-2015 Nissan Frontier Crew Cab Trucks Dual 10" Custom Fit Truck Subwoofer Enclosure Fits 2005-2015 Nissan Frontier Crew Cab Trucks Under Seat Down Firing Enclosure Design High Quality MDF Construction with Charcoal Carpet Finish Subwoofer Mounting Depth is 4.5"