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Show DON'T BE; CAUGHT WITH YOUR ENVELOPES SHORT Effective' January 1, 1903 envelopes less than 3 Inches In width (height) or 4V4 inches in length will be classified as nonmailable by the Postal Department, also envelopes having a shape other than rectangular will be nonmailable. As the postal department becomes more mechanized It Is necessary that the envelopes become more standard as to shape' and size thus eliminating most of the manual handling In the facing, sorting and canceling of the mall. . Part 122 of the postal manual also states: Envelopes more.Hhan 9 inches In width (height) or 12 inches in length ate not recommended. |