273 Weight and Size Limits

273.1 Weight Limit

For First-Class Mail International or First-Class Package International Service items, or for Priority Mail International Flat Rate Envelopes and Small Flat Rate Priced Boxes, the weight limit is 4 pounds.

For Priority Mail International items (excluding Flat Rate Envelopes and Small Flat Rate Priced Boxes), 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 First-Class Package International Service items, see 251.2.

For Priority Mail International parcels, see 231.2.