Cargo Door Security Labels are used as an added layer of security for sealing the doors on truck trailers, sea containers and crates. These seals are applied over the door hinges or across the center gap of the two hinged doors. When removed, the seals will self destruct to indicate tampering, which leaves the OPENED VOID message in the film and a corresponding message in the adhesive residue on the door surface. Available as a roll of 100 labels with unique serial numbers, these cargo door seals help prevent pilferage of cargo stored in truck trailers, sea containers, and crates. Each label is 4 in x 13 in wide.