Usps Parcel Bag : Useful Links
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Each package sent in the M-bag must be marked "Postage Paid - M-bag." Mailpieces prepared as a bulk mailing must bear a U.S. return address.
Except for USPS Retail Ground and Parcel Select, no mailpiece may measure more than 108 inches in length and girth combined. Length is the measurement of ...
If any Priority Mail Express or Priority Mail packaging or packaging supplies (e.g., Priority Mail tape to seal a USPS Retail Ground® package) ...
The Postal Service does not accept in paperboard boxes, bags, or wraps difficult loads such as fragile items; delicate instruments; and high-density, small-bulky ...
When poly mailers are used, their overhang should not exceed 0.5 inches when the package is laying flat. Any paper used for paper bag or ...
Mail Class, Processing Category, USPS Container. First-Class Mail, Letter-size, Letter tray (with sleeve). Flat-size, Flat tray (with green lid). Parcel, Sack (green).