IMM Revision: M-Bag Clarification

Effective April 24, 2008, we are revising Mailing Standards of the United States Postal Service, International Mail Manual (IMM®) 260 to clarify the weight limit for sin­gle items placed in direct sacks of printed matter to one addressee (M-bags).

While the maximum weight for an M-bag is 66 pounds (including the tare weight of the sack), the maximum weight of individual items within a sack is implied by Universal Postal Union and Postal Service™ standards but is not clearly stated.

Mailing Standards of the United States Postal Service, International Mail Manual (IMM)

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2 Conditions for Mailing

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260 Direct Sacks of Printed Matter to One Addressee (M-Bags) 261 Description 261.1 General

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[Renumber current items b through e as new items c through f, and revise item a and add new item b as follows:]

a. Maximum weight of a sack:***

b. Maximum weight of an item: 4 pounds.

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263 Weight and Size Limits 263.1 Weight Limits

[Add a new sentence to the end of the paragraph in 263.1 as follows:]

***The maximum weight limit for an item is 4 pounds.

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We will incorporate these revisions into the next printed edition of the IMM and into the online version, which can be accessed via Postal Explorer® at http://pe.usps.gov.