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 an ORM–D material and all applicable requirements in 342 are met.

Proper Shipping Name

• Consumer Commodity.

ID Number

• Various (see Appendix A).

Mailability

• International Mail: Prohibited.
• Domestic Mail: Permitted only via surface transportation sent as Standard Mail or Parcel Post.

Required Packaging

Primary Receptacle

• The content of the primary receptacle is a nonflammable, nonpoisonous, or noncorrosive gas.
• The gas is contained within a metal primary receptacle that has a capacity of 19.3 fluid ounces (35 cubic inches) or less, does not exceed a pressure of 70 psig at 70° F, and is not completely filled at 130° F.
• Each nonrefillable primary receptacle must be designed to withstand a burst pressure of not less than 4 times its charged pressure at 130° F.
• Each refillable primary receptacle must be designed to withstand a burst pressure of not less than 5 times its charged pressure at 130° F.

Cushioning Material

• The primary receptacle must be surrounded by sufficient cushioning material to absorb shock and prevent breakage.

Outer Packaging

• Strong outer packaging that is capable of firmly and securely holding the primary receptacle and cushioning is required.
• Multiple primary receptacles may be securely packed within a single outer packaging up to a weight limit of 25 pounds (11.325 kg) per mailpiece.

Marking

• Each mailpiece must be clearly marked on the address side with “Surface Only” or “Surface Mail Only” and “Consumer Commodity ORM–D.”
• Optionally, each mailpiece may bear an approved DOT limited quantity square-on-point marking, designating surface transportation, prepared under 342.4c, instead of an ORM-D marking.
• A complete return address and delivery address must be used.