The DUN-14 (Distribution Unit Number) is not really a barcode type. It’s a numbering system for shipping containers that uses other barcode symbology. The DUN-14 uses the ITF-14 or the EAN-14 symbol set. Modern installations always use the EAN-14 to encode the DUN-14.
A short comparison of ITF-14 with EAN-14. The number “3071234500001” is coded as EAN-14 first:
And now the same number as ITF-14:
The DUN-14 has the following data encoded:
- The first digits represents the number of units in the container: 1=6 units, 2=10 units, 3=12 units, 4=20 units, 5=24 units. The digits 6,7 and 8 are standing for other numbers of units.
- The next 12 digits are representing the product number. General this the EAN-13 number without the check digit.
- The last digit is the check digit.