Effective January 17, 2016, the Postal Service™ will revise Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM®) 201.8.3 to list the maximum dimensions for First-Class Package Service as currently stated in the Mail Classification Schedule.
Although this revision will not be published in the DMM until January 17, 2016, these standards are effective immediately.
Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM)
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200 Commercial Letters, Cards, Flats, and Parcels
201 Physical Standards
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8.0 Additional Physical Standards by Class of Mail
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8.3 First-Class Package Service Parcels
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8.3.2 Size
The address side of the parcel must be large enough to contain all delivery and return address, endorsement, postage, and label elements. A First-Class Package Service parcel is:
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[Revise the text of 8.3.2 by adding a new item d to read as follows:]
d. A mailpiece that does not exceed 22 inches in length, 18 inches in width, and 15 inches in thickness.
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We will incorporate this revision into the next update of the online DMM, which is available via Postal Explorer® at http://pe.usps.com.
— Product Classification,
Pricing, 12-10-15
