For large first class mail envelopes and parcels the maximum weight is 13 oz.
Usps first class package box size.
Maximum combined length and girth girth is the distance around the thickest part is 108.
Maximum sizes and weights for usps services domestic services.
Look up a zip code hold mail.
18 in any dimension total volume cannot exceed 0 5.
Machinable packages may not be smaller than 6 x 3 x 0 25.
Rent renew a po box.
All postcards and envelopes or flats must be rectangular otherwise an additional charge may apply.
13 ounces price based on weight and zone.
108 combined length girth.
First class package service retail parcels cannot measure more than 108 inches in length and girth combined.
Parcels that exceed 13 ounces are mailed at the priority mail rate.
Weight size shape requirements.
Usps retail ground items that are between 108 and 130 inches will be charged at the oversized price.
First class package service retail parcels.
Learn more about usps oversized package charges.
22 x 18 x 15 maximum weight.
This can be determined through the postage calculator.
Lower maximum size standards may apply to mail addressed to some apos fpos and dpos.
Weight size shape requirements maximum weight for first class mail letters is 3 5 oz.
How to prepare a package.
First class mail is an affordable mail service for standard sized single piece envelopes weighing up to 3 5 oz and large envelopes and small packages weighing up to 13 oz with delivery in 3 business days or less.
When sealing a flat rate envelope or box the container flaps must be able to close within the normal folds.
70 lbs 1120 ounces priority mail cubic.
From 0 55 at a post office.
No package may be smaller than 5 x 3 5 x 0 007.
Packages are also subject to minimum dimensions.
The maximum size of a parcel bound for an international destination varies based on country.
15 99 oz weight based priority mail.