2014-2017 Chevy Silverado / GMC Sierra Crew Cab Dual 10 Downfire With Amp Space Sub Box Black Fits: 2014-2018 GM 4 Door Crew Cab Trucks Fits Under Rear Seat and Subs Fire Down Mounting Depth: 6", Amp Shelf Area: 14" x 15" Volume Per Chamber: .6 cu.ft., Sealed Box Finish: Black Carpet (same as in photos), Speaker terminals installed