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Postcard dimensions
Letter dimensions for envelopes, cards and self-mailers
Flat dimensions envelopes, cards and brochures

Additional Information

Booklet & Self Mailers
(Letter size may change based on weight.  Please call to verify.)

Max Weight = 3 Ounces
Max Height = 6 Inches
Min Height = 3.5 Inches
Max Length = 10.5 Inches
Min Length = 5 Inches

 

Automation Postcard & Letter Aspect Ratio:

Length/Height Between 1.3 to 2.5

 

Letters Maximum Weight

Automation
1st Class= 3.5 Ounces
Standard Mail = 3.5 Ounces

 

Machinable
1st Class= 3.3 Ounces
Standard Mail = 3.3 Ounces

Non Machinable
1st Class= 3.5 Ounces
Standard Mail = 16 Ounces

 

1st class mail over 3.5 ounces up to 13 ounces = Flat Rates

Flats 1st Class maximum = 13 Ounces
Standard mail maximum = 16 Ounces

Automation
Height = 5 Inches minimum
Length = 6 Inches minimum

 

Non-Automation
Height greater than 6.125 inches
Length greater than 6.125 inches

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