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USPS Packaging Instruction 9C

Miscellaneous Hazardous Materials

A Class 9 miscellaneous hazardous material that qualifies as a consumer commodity or ORM-D material is permitted in domestic mail provided all applicable requirements in 349 are met.

Proper Shipping Name

ID Number

Mailability

Required Packaging

Primary Receptacle
Cushioning Material
Outer Packaging
Marking
Documentation