Fact Sheet: Priority Mail Large Flat-Rate Box

Note: The APO/FPO Flat-Rate Box is intended for use only to APO/FPO addresses; however, retail employees will not refuse these boxes if presented at retail for non-APO/FPO addresses.



12 inches x 12 inches x 5-1/2 inches (50 percent more capacity than the current flat-rate box).


Effective Date

On March 3, 2008, customers can begin sending the new boxes at the above prices.

Customers may order boxes from The Postal Store®, at www.usps.com, and by calling 800-610-8734 beginning February 20, 2008, but shipping at the new rates cannot begin until March 3, 2008.