US Postal Service Parcel/Package Change

University Print & Mail Services would like to notify faculty and staff of recent US Postal Service parcel and package changes that are effective immediately.

When preparing parcels and/or packages using the US Postal Service, you need to apply a Label 400 barcode on all affected types of mail.  If you answer “YES” to any of the questions below, a Label 400 is REQUIRED:


  • Is your mailpiece in a box?
  • Does your mailpiece exceed 15” long x 12” wide?
  • Is your mailpiece more than ¾” thick?
  • Is your mailpiece rigid, nonrectangular, or not uniformly thick?
  • Does your mailpiece weigh more than 13 ounces?


Please contact Mail Services at or X5326 with questions and to request the Label 400.


Click here to see examples of Label 400 and here to view the latest Mail Services announcements