Rear Underseat Lockbox 15-22 F-150 17-22 F-250/350 Super Duty w/ Extended Cab Black Products Tuffy SecurityThis high security 16 gauge steel security lockbox mounts under the rear seat in a 2015 plus Ford F Series SuperCab Extended Cab. The full width formfitting design of the Tuffy lockbox has over 3000 cubic inches of lockable storage. It's secured contents are easily accessed by flipping either or both of the rear seats up and opening the corresponding lids. The unique design allows the full width to be used to stow firearms or other long items.