The Priority Mail Flat Rate® Medium Box is a quick, easy, and convenient way for you to ship USPS Priority Mail® packages. The Priority Mail Flat Rate® Medium Box features …

Priority Mail, including Priority Mail Flat Rate shipping products, has fast shipping times (2-3 days) with flexible prices. Get free flat rate boxes and print postage labels online.

This is the Priority Mail® Forever Prepaid Flat Rate Medium Box. This cube-style, top-loading box will easily fit those odd-sized or multiple small to medium size items that need to get there a …

Weight restrictions for Priority Mail International Large and Medium Flat Rate Boxes are 20 pounds, and 4 pounds for Priority Mail International Flat Rate Envelopes and Small Flat Rate …

Priority Mail ® service offers a variety of Flat-Rate Boxes and Envelopes that ship for the same price to any domestic address, regardless of how much they weigh or how far they’re going.

This is the Priority Mail® Forever Prepaid Flat Rate Side-Loading Medium Box. This side-loading box will hold several of those special, flat-style items perfectly: shirts, sweaters and most any …

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Single, Pack of 10 or 25 12-1/4" (L) x 12" (W) x 6" (H) $0.00 Priority Mail® Forever Prepaid Flat Rate Medium Box Includes Customer's Return Address 11" (L) x 8-1/2" (W) x 5-1/2" (H) $21.95

Single, Pack of 10 or 25 8-11/16" (L) x 5-7/16" (W) x 1-3/4" (H) $0.00 Priority Mail Flat Rate® Side-Loading Medium Box Single, Pack of 10 or 25 14-1/8" (L) x 12" (W) x 3-1/2" (H) $0.00

Prepaid Priority Mail Priority Mail® Forever Prepaid Flat Rate Legal Envelope Includes Customer's Return Address 15" (L) x 9-1/2" (H) $12.10