Skip Navigation
MI.gov
DTMB - Department of Management & Budget | DTMB Department of Management & Budget | DTMB
Department of Management & Budget | DTMB
Email this Page
Share this Link on Facebook
Tweet this page on Twitter!
FAQ
  Mail Services
What is the difference between a letter and a flat?
 
Answer:
To qualify as a letter, a mailpiece must be a minimum of 3 1/2" H x 5" L and .007 inch thick, but not larger than 6 1/8" H x 11 1/2" L and 1/4" thick. A flat is a mailpiece larger than 6 1/8" H x 11 1/2" L and 1/4" thick but smaller than12" H x 15" L and 3/4" thick.




Copyright © 2014 State of Michigan