Address Requirements
POSTCARDS

4-1/4"
max.

3-1/3"
min

Height

Length 5" 

min.

6"

max.



PropertyMinimumMaximum
Length5 inches6 inches
Height3-1/2 inches4-1/4 inches
Thickness0.007 inch0.016 inch
First Class only:

  • 500 or more piece required for Automation and presorted prices.
  • Annual mailing fee required for automation and presorted prices Paid by QT2.
LETTERS

6-1/8"
max.

3-1/2"
min

Height

Length 5"

min.

11-1/2"

max.



PropertyMinimumMaximum
Length5 inches11-1/2 inches
Height3-1/2 inches6-1/8 inches
Thickness0.007 inch1/4 inch
First Class

  • 500 or more pieces required for Automation and presorted prices.
  • Maximum Weight: 3.5 ounces
Standard Mail:
  • 200 or more pieces
  • Maximum weight 3.5 ounces
  • Annual mailing fee is required for automation and presorted prices, Paid by QT2
FLATS

12"
max.

6-1/8"
min

Height

Length 11-1/2"

min.

15"

max.



PropertyMinimumMaximum
Length11-1/2 inches15 inches
Height6-1/8 inches12 inches
Thickness1/4 inch3/4 inch
First Class

  • 500 or more pieces required for Automation and presorted prices.
  • Maximum Weight: 13 ounces
Standard Mail:
  • 200 or more pieces
  • Maximum weight 13 ounces
  • Annual mailing fee is required for automation and presorted prices, Paid by QT2