Q:

What are the sizes of USPS envelopes?

A:

Quick Answer

The U.S. Postal Service sells envelopes in sizes ranging from 5-by-10 inches all the way up to 11 5/8-by-15 1/8 inches. Most of their envelopes are dedicated to Priority Mail for items needing urgent delivery. The Postal Service also sells shipping boxes for larger items.

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What are the sizes of USPS envelopes?
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Full Answer

The U.S. Postal Service sells standard flat rate Priority Mail envelopes in sizes including 9 1/2-by-12 1/2 inches, 9 1/2-by-15 inches, 6-by-10 inches, 10-by-7 inches and 5-by-10 inches. Priority Mail Express envelopes come in sizes including 9 1/2-by-12 1/2 inches, 9 1/2-by-15 inches and 5 7/8-by-10 inches. Padded Priority Mail and Priority Mail Express envelopes are available at 9 1/2 by 12 inches, and waterproof Tyvek Priority Mail envelopes are available at 11 5/8-by-15 1/8 inches.

For international mail, the U.S. Postal Service sells Global Express envelopes at 9-1/2 by-12 1/2 inches and 11 5/8-by-15 1/8 inches.

For shipping larger items, the U.S. Postal Service sells Priority Mail flat rate boxes in sizes including 5 3/8-by-8 5/8-by-1 5/8 inches, 11 7/8-by-3 3/8-by-13 5/8 inches, 23 11/16-by-11 3/4-by-3 inches and 11-by-8 1/2-by-5 1/2 inches. Specialty boxes are available for shipping shoes, DVDs and board games. In addition, mailing tubes are available for shipping rolled-up documents such as posters.

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