This high security 16 gauge steel security lockbox mounts under the rear seat in a GM Crew Cab Truck. The full width formfitting design of the Tuffy lockbox has over 3500 cubic inches of lockable storage. It’s secured contents are easily accessed by flipping either or both of the rear seat(s) up and opening the corresponding lid(s). The unique design allows the full width to be used to stow firearms or other long items. Featuring Tuffy’s Pry-Guard Locking System with a 10 tumbler double bitted security lock with built in weather seals. Chamfered corners are incorporated into the design for easier passenger access. The innovative mounting system is only accessed from inside the box. When additional floor space is needed the entire lockbox can be removed in seconds without the need for any tools. Over 3500 Cubic inches of lockable storage space Weather resistant lid design incorporates an exclusive hinging system with built-in lid stop. Innovative mounting system permits removal from vehicle in seconds from inside the box when unlocked without the need for tools. Quick and easy install, no drilling. Mounting hardware provided. Chamfered corners are incorporated into the design for easier passenger access. MODEL NO - 307-01