Answer
Jan 18, 2024 - 06:56 AM
Per USPS
Mailable types of safety matches must be tightly packed in a securely sealed primary receptacle to prevent any shifting or movement that could cause accidental ignition by rubbing against adjoining items.
Multiple primary receptacles are permitted per mailpiece.
Outer Packaging
The outer packaging material must be made of fiberboard, wood, or other equivalent and be strong enough to prevent the inner contents from bursting through.
The primary container(s) must be snugly packed within the outer packaging.
Each mailpiece must not exceed a total weight of 25 pounds.
Marking
The address side of each mailpiece must be clearly marked “Surface Only” or “Surface Mail Only” and either “Book Matches”, “Card matches,” or “Strike-on-Box Matches,” as applicable.
A complete return address and delivery address must be used.