Truxedo 771601 Tonneau Cover Features: Soft Roll-Up; Hinged Tonneau Combination Automatic Tension Control-Keeps Cover Tight Lifetime Warranty Covers Everything-Even Fabric Quick/Easy Entry To Front Of Bed Completely Stores At The Front Of Bed Corner/Side Seals Help Keep Elements Out Patented Velcro® Brand Side Sealing System Low Profile Design Improves Gas Mileage Height: 10.50 Width: 9.38 Length: 73.50 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 Aspira...