First Class Letter
Minimum thickness .007 inch (if no more than 4-1/4" high and 6" long); .009 inch (if more than 4-1/4" high or 6" long or both). Maximum thickness .016 inch.

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Letter
First-Class 29¢
Presorted .245¢;
Automation Mixed AADC .230 ¢
Automation AADC .220 ¢;
Automation 3-digit 218 ¢
Automation 5-digit .205¢
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