The recommended alternative to these boxes is Priority Mail Cubic. Customers who currently use these boxes are encouraged to place orders before supplies are depleted. Priority Mail Regional Rate Boxes B1 and B2 have a maximum weight requirement of 20 pounds for both domestic and international shipping.Īfter conducting a Return on Investment analysis, the Postal Service™ decided to discontinue further production of these boxes as part of an effort to simplify the Priority Mail products offering.

Priority Mail Regional Rate Boxes A1 and A2 have a maximum weight requirement of 15 pounds for domestic shipping and 10 pounds for international shipping. These boxes are currently available on The Postal Store ® website at, in packs of 10 and 25, with the following dimensions (L x W x H): They were created to combine the speed and convenience of Priority Mail and Priority Mail International ® shipping with zone pricing to potentially reduce commercial customers’ shipping costs.

The United States Postal Service ® introduced Priority Mail Regional Rate Boxes A and B in 2011.

Customers with Priority Mail Regional Rate Boxes A and B in their inventory can still use them for shipping, but they will be processed as weight and rate packages. Priority Mail Regional Rate Boxes A and B will be DiscontinuedĮffective Janu(and subject to approval by the Postal Regulatory Commission), Priority Mail ® Regional Rate Boxes A and B will be discontinued, and the current pricing for these boxes will no longer be applicable.

Usps priority large flat rate box