BAK Industries 126121 Features: Hard Full Access Tonneau Cover Lets You Use Your Truck Like A Truck Lightweight/Strong Durable And Affordable Custom Fit Flush Profile Clamp It On Fold It Open Height: 8.00 Width: 23.00 Length: 68.00 Fitment: 2017/GMC/Sierra 3500 HD/SLT Extended Cab Pickup 4-Door/6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged::Bed Length = 78.8, Bed Side = Fleetside, Dually Bed^^2017/GMC/Sierra 3500 HD/SLT Extended Cab Pickup 4-Door/6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated::Bed Length = 78.8, Bed Side = Fleetside, Dually Bed^^2017/GMC/Sierra 3500 HD/SLT Extended Cab Pickup 4-Door/6.0L 5967CC 364Cu. In. V8 FLEX OHV Naturally Aspirated::Bed Length = 78.8, Bed Side = Fleetside, Dually Bed^^2017/GMC/Sierra 3500 HD/SLT Crew Cab Pickup 4-Door/6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged::Bed Length = 78.8, Bed Sid...
