: Local franchises like PostNet or Mail Boxes Etc. frequently keep flat rate boxes in stock for customer use.

While USPS is the direct provider, you may find boxes at other retailers, though some may charge a nominal fee or require specific service usage:

: You cannot use your own box and claim the flat rate price; you must use the branded USPS Flat Rate container.

To ensure you receive the flat rate pricing, you must follow these USPS regulations: