UN3373 MAILBOXES

Our UN3373 Return Mailboxes are tailored for secure and compliant mailing of Category B Biological specimens, meeting P650 packaging standards.

Available in A6 and C5 sizes, these mailboxes include a Mailbox Seal Label for tamper-proof security.

The front accommodates the space for the Royal Mail Tracked Return Label, and the back has a “From” and “Contents” label for easy identification.

Each mailbox is clearly marked with “BIOLOGICAL SUBSTANCES CATEGORY B” and “UN3373” in characters of at least 8 mm height, ensuring compliance and safety during transit.