2014-2017 Chevy Silverado / GMC Sierra Crew Cab Dual 10 Downfire With Amp Space Sub Box Charcoal Gray Fits: 2014-2018 GM 4 Door Crew Cab Trucks--Will NOT fit Double Cab 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: Charcoal Gray Carpet (slightly different than photos), Speaker terminals installed