The Priority Mail® Large Flat Rate Box is a quick, easy, and convenient way for you to ship Priority Mail® packages. It features predetermined rates regardless of weight (domestically) or destination, similar to our other Flat Rate products.
Please Note: This product ships in packs of single boxes (1-5), 10 or 25 boxes. An order of 1 equals (1-5) single boxes, or packs of 10 or 25 boxes depending on your selection under Format.
Each Priority Mail and Priority Mail Express shipment includes USPS Tracking®.
Note: When shipping packages, size and weight restrictions may apply and additional shipping rates may be required.
For the optimal postage and fees for your package deliveries, please access our new "How To Measure" video for tips on how to measure a package using Dimensional Weight and Cubic Volume.
A Universal Product Code (UPC) (11-digit PS barcode which includes):
- The price of the product.
- The product description.
Package Pickup Service:
- Customers can go to USPS.com to request Package Pickup.
- There is $50 insurance coverage included on each Priority Mail shipment.
A Quick Reference (QR) Code:
- A QR Code is located on the front or back of the Expedited Packaging Supplies, when scanned it will allow customers to schedule free Package Pickup.
- Recycling logos are displayed on the front or back of Expedited Packaging Supplies. Information on the recycling logo provides the proper steps to effectively recycle the item.
The Postal Store® ships all in-stock orders with USPS Tracking™. Please allow 5 - 7 business days for in-stock items to be shipped.
To view your order status and tracking information, sign in to your USPS.com account, go to "Activity History", and select your Order#.
Orders from the Postal Store may be shipped from different distribution centers. If your order contains multiple items, they may be shipped separately.
The Postal Store® cannot accept orders for shipment outside the United States, but we do ship to APO/FPO/DPO addresses and U.S. territories. Learn More
Free Shipping Supplies Free shipping supplies from The Postal Store Shipping Supply site are mailed Parcel Select® Ground and are shipped within 2 - 8 business days. For your convenience all orders will contain a carrier release endorsement "Leave if No Response". This will allow your postal carrier to leave your expedited packaging supply order if you are not available to receive the delivery.
Expedited Shipping Supplies Orders of our Flat Rate Expedited Shipping Supplies are fulfilled by your local Post Office. If your local Post Office is unable to fulfill your order of Flat Rate Expedited Shipping Supplies within 1 - 2 business days, your order will be fulfilled by our distribution center within 2 - 8 business days.