UPC Shipping Container Symbol (ITF-14)
The UPC Shipping Container Symbol (ITF-14) bar code is used to mark packaging materials that contain products labeled with a UPC or EAN product identification number.
This bar code provides a GS1 implementation of an Interleaved 2 of 5 bar code for encoding a Global Trade Item Number (an identifier for trade items developed by GS1). This bar code always uses a total of 14 digits.
The thick black border around the symbol (the Bearer Bar) is intended to improve bar code reading reliability.