Mail size limit exchange 2020

The size limit for a standard letter mailpiece in the United States is 11.5 inches long, 6.125 inches high, and 0.25 inches thick. This is according to the United States Postal Service (USPS) regulations.

However, there are some exceptions and additional requirements for larger mailpieces:

• Flat Rate Envelopes: The USPS offers flat rate envelopes that can be used for larger mailpieces. These envelopes have a maximum size of 12 inches long, 12 inches high, and 1/4 inch thick.
• Priority Mail Flat Rate Boxes: The USPS also offers flat rate boxes that can be used for larger mailpieces. These boxes have a maximum size of 13 inches long, 13 inches high, and 8 inches thick.
• Large Envelopes: Large envelopes, also known as "greeting cards," can be up to 15 inches long, 12 inches high, and 0.75 inches thick.
• Oversized Mailpieces: Mailpieces that exceed the standard size limit can be sent as oversized mailpieces. These mailpieces require a special permit and may incur additional postage.

It's worth noting that the USPS has specific requirements for the weight and dimensions of mailpieces, and there may be additional fees for oversized or heavy mailpieces.

Here are the USPS size and weight limits for different types of mailpieces:

• Standard Mail (letters and flats):
  • Length: 11.5 inches
  • Height: 6.125 inches
  • Thickness: 0.25 inches
  • Weight: 3.5 ounces
• Priority Mail:
  • Length: 108 inches
  • Height: 17 inches
  • Thickness: 0.5 inches
  • Weight: 70 pounds
• Priority Mail Flat Rate Envelopes:
  • Length: 12 inches
  • Height: 12 inches
  • Thickness: 1/4 inch
  • Weight: 70 pounds
• Priority Mail Flat Rate Boxes:
  • Length: 13 inches
  • Height: 13 inches
  • Thickness: 8 inches
  • Weight: 70 pounds

It's always a good idea to check with the USPS or consult their website for the most up-to-date information on size and weight limits for mailpieces.