Nonmachinable Outside (NMO)

Nonmachinable Outside (NMO) - A parcel or mailpiece that, because of size, weight, or other characteristic, cannot be sorted by mechanized mail processing equipment and must be handled manually. The parcel is called an outside because it cannot be placed in a sack or other mailing container.

[Category=Postal ]

Source: USPS, 12 October 2009 10:59:09, http://www.usps.com/cpim/ftp/pubs/pub32/pub32h_p.html