FedEx® UN 3373 Pak


Use this plastic overwrap for specimens containing or suspected of containing infectious substances meeting the International Air Transport Association (IATA) definition of Biological Substance, Category B (UN 3373). Properly packaged shipments smaller than 17.8 cm x 10.2 cm x 5.1 cm must be shipped in the FedEx UN 3373 Pak overwrap. Mark the 'Other' box in Section 5 of the International Air Waybill or select “Your Packaging” when creating a label with our automation tools.


  • Internal measurements: Height 34.3 cm, Width 45.7 cm
  • Weight limit: 9 kg