Priority Mail Flat Rate® Medium Box - 1

Priority Mail Medium Flat Rate Boxes are a quick and convenient way to send priority mail packages. Visit The Postal Store to buy medium boxes today.

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Priority Mail Express Flat Rate Envelope 12 1/2

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Priority Mail Flat Rate® Medium Box - 1

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Priority Mail Flat Rate® Medium Box - 1

Priority Mail Flat Rate® Medium Box - 1

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