Minimum Size Standard

The smallest dimensions permitted for all mailable matter or for a specific mail processing category or specific rate. Except for keys and identification devices, a mailpiece less than ¼ inch thick must be rectangular and meet the following minimum criteria (otherwise it is non-mailable and must be returned to sender):

At least 5 inches long.

At least 3-1/2 inches high.

At least .007 inch thick.

Related Products
Address Verification Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore.
Geocoding Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore.
Identity Verification Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore.