Each envelope is unique in size and structure and has differing use cases. There are 5 different options for USPS Flat Rate Envelopes. That being said, let's dive into the different USPS Priority Mail Box and Envelope options. Each flat-rate envelope or box has at least two pricing tiers. The USPS offers several flat-rate shipping options, including various envelopes and boxes. With a USPS Flat Rate Box or Envelope, you will be able to ship any item of any weight up to 70lbs to any location for the same price assuming it fits properly, without any bulging, within its designated box or envelope. The USPS flat-rate boxes are Priority Mail, meaning a package usually arrives in two or three days.

If using non-customized boxes is not a deal breaker for you, USPS Flat Rate Shipping is a great tool to spend less on shipping. This can be a drawback for some because, unless you are a high volume shipper, you cannot get customized boxes with specific branding. In order to have access to the USPS Priority Mail Flat Rate pricing, you must use one of USPS designated Flat Rate Boxes you cannot use just any box of the same dimensions. Flat Rate and prepaid pricing (retail only) available. Includes USPS Tracking ® 4 and up to 100 of insurance 5 with most shipments 6 (restrictions apply) No surcharges for fuel residential or rural delivery or Saturday 7 delivery. You can pick them up at any post office or USPS will actually ship the boxes opens in new tab open_in_new to you for free. Free Package Pickup 3 service at your home or office. One of the many benefits of shipping with USPS Flat Rate Boxes is that the boxes themselves are free. How You Can Use USPS Flat Rate Boxes and Envelopes to Save on Shipping

Usps medium flat rate box price ebay