BAK Industries Truck Bed Cover Features: All Aluminum Retractable Cover Full Access To Stake Pockets Easy Clamp-On Rail System Specially Designed To Work w/Ladder Rack/Bed Caps Sleek Flush Fit Profile Space Saving Canister Design Double Latching Security System Height: 73.00 Width: 14.00 Length: 14.00 Fitment: 2014/GMC/Sierra 3500 HD/WT Standard Cab Pickup 2-Door/6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged::Bed Length = 78.8, 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 = 78.8, 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 = 78.8, Bed Side = Fleetside, Dually Bed^^2014/GMC/Sierra 3500 HD/WT Crew Cab Pickup 4-Door/6.6L 6...