Publication 52 - Hazardous, Restricted, and Perishable Mail > Summary of Changes
Publication 52, Hazardous, Restricted, and Perishable Mail
Effective August 27, 2020, Publication 52, Hazardous, Restricted, and Perishable Mail, has been updated with the following changes:
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Chapter 5, Perishable Matter
Revised to centralize the requirements for Adult Bird container approvals.
Appendix C, USPS Packaging Instructions for Mailable Hazardous Materials
USPS Packaging Instruction 10D
Adult Bird Boxes
Revised to add new Packaging Instruction 10D for clarity regarding Adult Bird Boxes.