Addressing Rules for Large Mail Pieces
The USPS has released new address standards for commercial flat-sized mail. What is “Flat-Sized” mail? Flat-sized mail (Flats) is a mail piece that is larger than 6.125 inches high or wider than 11.5 inches long. Magazines, catalogs and large envelopes are considered flat-sized mail. If you have questions about your mail, please call us. Address [...]
