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USPS Packaging Instruction 2E

Audible Fire Alarm Systems

An audible fire alarm system powered by a compressed gas is mailable only in domestic mail via surface transportation provided that the system qualifies as a consumer commodity or ORM-D material and all applicable requirements in 342 are met.

Proper Shipping Name

ID Number

Mailability

Required Packaging

Primary Receptacle
Cushioning Material
Outer Packaging
Marking