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Postcards

Postcard SizeQuantity
First-Class Mail® Postcards ($0.28 each)   more info about regular sized postcards
Maximum size: 6 inches long by 4 1/4 inches high by .016 inch thick
First-Class Mail® Large Postcards ($0.44 each)   more info about large postcards
Maximum size: 11 1/2 inches long by 6 1/8 inches high by 1/4 inch thick