Extang Express Tonno Tonneau Cover Features: Roll Top Style Easily Installs In Minutes Improve Gas Mileage By Ten Percent No Drilling; No Damage Fast Easy Access To Bed And Cargo One Finger Quick Release Levers At Tail and Cab Aggressive High Peel Strength Velcroâ?¢ Tarp And Bows Roll Up Together In One Step MaxCare Warranty;Lifetime Warranty Frame And Tarp Height: 6.00 Width: 10.00 Length: 97.00 Fitment: 2014/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged::Bed Length = 97.6, Bed Side = Fleetside, Dually Bed^^2014/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated::Bed Length = 97.6, Bed Side = Fleetside, Dually Bed^^2014/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.0L 5967CC 364Cu. In. V8 FLEX OHV Naturally Aspirated::Bed Length = ...