Size: For UPC-A, the nominal size is 1.469 inches wide by 1.02 inches high, including the number system and check characters. The maximum recommended size, 200% of the nominal size, is 2.938" w x 2.04" h. The minimum recommended size is 80% of the nominal size, or 1.175" w x .816" h. Size may vary depending on package design and printing