Every size of mail has specs to allow the mailer to print and send the materials efficiently. From the lower right corner of a 6×9 postcard, the address space needed is 1 1/2 inches from the bottom and 4 inches from the right, and the barcode space needed is 5/8 inch from the bottom and 4 3/4 inches from the right.

Address space: 1 1/2″ x 4″

Barcode space: 5/8″ x 4 3/4″

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