BAK Industries 126120 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 1500/SLT Extended Cab Pickup 4-Door/6.2L 6162CC 376Cu. In. V8 GAS OHV Naturally Aspirated::Bed Length = 69.3, Bed Side = Fleetside^^2017/GMC/Sierra 1500/SLT Extended Cab Pickup 4-Door/5.3L 5328CC 325Cu. In. V8 GAS OHV Naturally Aspirated::Bed Length = 69.3, Bed Side = Fleetside^^2017/GMC/Sierra 1500/SLT Extended Cab Pickup 4-Door/5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated::Bed Length = 69.3, Bed Side = Fleetside^^2017/GMC/Sierra 1500/SLT Crew Cab Pickup 4-Door/6.2L 6162CC 376Cu. In. V8 GAS OHV Naturally Aspirated::Bed Length = 69.3, Bed Side = Fleetside^^2017/GMC/Sierra 1500/SLT ...