This high security 16 gauge steel security lockbox mounts under the rear seat in a Chevy Silverado Crew Cab. The full width formfitting design of the Tuffy lockbox has over 3500 cubic inches of lockable storage. Its 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 Tuffys 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. Mounts inconspicuously under the seat out of apparent site of would be thieves. Is quickly and easily installed using the factory hardware without drilling.