This digital Security Box is secure and large enough to store laptop computers up to 17 in. The box holds 8-1/2 by 11 in. paper flat; is constructed with double steel walls and is insulated for protection against fire. The security box also includes a 48 in. security cable (650 lbs. of tensile strength) that can be attached to stationary objects to allow for additional protection; as well as a foam liner that helps protect valuables from jostling when on the move.