General Mailability Standards

Postcards:                   Not LESS than 5" long, 3-1/3" high, and at least .007" thick
                                  No MORE than 6" long, 4-1/4" high, and at least .007" thick

Letter Size:                  Not LESS than 5" long, 3-1/2" high, and .0007" thick 
                                  No MORE than 11-1/2" long, 6-1/8" high, and ¼" thick

Flat Size:                     More than 11-1/2" long, or more than 6-1/8" high, or more than ¼" thick 
                                  NOT More than 15" long, 12" high, and ¾" thick 
                                  Unwrapped, sleeved, wrapped, or enveloped

Machinable Parcel:  Not less than 6" long, 3" high, ¼" thick and 8 oz in weight.  No MORE than 34" long, 17" high, 17" thick, and 35 lbs. The maximum weight for books or other printed matter is 25 lbs. Between 6 oz or 8 oz, if all sides are rectangular, and meet or exceed the other dimensions.

Irregular Parcel:  An irregular parcel is a parcel not meeting the general dimensional criteria.  It also includes parcels that are not machinable. Irregular parcels MUST have "Hand Cancel" printed clearly on the outside of the article. Irregular items CANNOT be mailed in letter size envelopes, for example - a writing instrument. They must be mailed in a flat size envelope.

When Postcards, Letter Size, and Flat Size mail fall outside the size limits, they will be subject to a surcharge.


Questions to Campus Mail Services e-mail: