DU-HA 10001 Features: Keeps Everything Organized Under The Seat Safely Stores Valuables Out Of Sight Acts As A Legal Gun Case In Most States Virtually Indestructible Easy Installation All Models Come With Gun Rack/Organizers 30 Day Money Back Guarantee Lifetime Warranty Height: 9.25 Width: 14.25 Length: 57.25 Weight: 19.00 lbs Fitment: 2007/GMC/Sierra 3500/Classic WT Extended Cab Pickup 4-Door/8.1L 496Cu. In. V8 GAS OHV Naturally Aspirated::Optional Lock Kit Available For This Model; PN[80090]^^2007/GMC/Sierra 3500/Classic WT Extended Cab Pickup 4-Door/6.6L 400Cu. In. V8 DIESEL OHV Turbocharged::Optional Lock Kit Available For This Model; PN[80090]^^2007/GMC/Sierra 3500/Classic WT Extended Cab Pickup 4-Door/6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated::Optional Lock Kit Available For This Model; PN[80090]^^2007/...