273 Weight and Size Limits

273.1 Weight Limit

For First-Class Mail International items (including Priority Mail International flat-rate envelopes and small flat-rate boxes), the weight limit is 4 pounds.

For Priority Mail International items (excluding the flat-rate envelope and the small flat-rate box), the weight limit is 15 pounds.

Note: The 15-pound weight limit for Priority Mail International parcels also applies to any USPS-produced flat-rate packaging that may have higher maximum limits when not mailed as Free Matter for the Blind or Physically Handicapped.

273.2 Size Limits

For First-Class Mail International items, see 241.2.

For Priority Mail International parcels, see 231.2.