The weight restriction for domestic Flat Rate Envelopes and Boxes is 70 lbs. Tape may be applied to the flaps and seams to reinforce the container, provided the design of the container is not enlarged by opening the sides and the container is not reconstructed in any way. Ended calling Washington, they sent a message out to all offices.ĭMM Notice: Proper Use of Flat Rate ContainersĮmployees are reminded of the proper use of Priority Mail Express® and Priority Mail® Flat Rate envelopes and boxes (containers).Īccording to Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM®), when sealing a Flat Rate Envelope (FRE) or Flat Rate Box (FRB), the container flaps must be able to close within the normal folds. The Postal Explorer Magazine put out contradictory info from the DMM. Had issues with over zealous clerks in the past. Flat rate shipping is ideal for those that have to ship multiple or heavier shipments.Warning: Don't Overstuff Priority Mail Flat Rate Envelopes

As a general rule, we recommend using a standard shipping service to ship smaller packages, as the rate is determined purely by the size, maximum weight, and possible long distances it needs to travel. SFL Worldwide makes it easy for our users to get discounted rates for small and large flat rate box shipping and standard shipping with our intuitive rate calculator that gets quotes from some of the best carriers in the industry, such as DHL, UPS, and FedEx within seconds. Use our instant rate calculator to find a USPS Priority Mail Express standard or flat rate plan that suits your needs. Unlike Flat Rate Shipping, regular or standard shipping calculates rates based on a package’s weight, size, destination, and service to determine your shipping prices. Flat Rate Shipping, as the name suggests, offer a fixed and flat rate for all shipments, irrespective of their size or weight. Shipping methods have their own advantages and disadvantages.

Usps flat rate priority mail envelope