Priority Mail Flat Rate® Medium Box - 2

Order medium flat rate boxes for quick, easy, and convenient ways to ship Priority Mail packages. They can be used for domestic and international shipping.

USPS Priority Flat Rate - University Mail Services

A Guide on When and Why to Use USPS Flat Rate Boxes and Envelopes

Priority Mail Flat Rate: Understanding Your Shipping Options

Priority Mail Box - 4

Priority Mail DVD Box

Medium Flat Rate Box Price - US Global Mail

Priority Mail Flat Rate® Medium Box - 1

Potomac Distribution - USPS Flat Rate Boxes

Includes Customers Return Address

Priority Mail Forever Prepaid Flat Rate Medium Box - 1