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    Priority Mail Regional Rate Box - B1

    12" x 10-1/4" x 5"

    The Priority Mail® Regional Rate Box - B1 is a quick, easy, and convenient way for you to ship USPS Priority Mail packages. It is a top-loading box for up to 20 pounds.

    Inside Dimensions: 12" x 10-1/4 x 5"
    Outside Dimensions: 12"-1/4 x 10-1/2" x 5-1/2"

    For more information, please visit the Shipping page

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