Where Can I Buy Flat Rate Shipping Boxes Apr 2026

: You can also order these supplies by calling the USPS Package Supply Center at 1-800-610-8734 . 2. FedEx and UPS

: You can pick up a limited selection of Priority Mail Flat Rate Boxes at any local Post Office lobby. where can i buy flat rate shipping boxes

If you need specific types of boxes or want to buy in bulk from other sources: : You can also order these supplies by

: You can find boxes for UPS Simple Rate at The UPS Store . Unlike USPS, UPS often allows you to use your own packaging for their flat-rate service as long as it meets their size requirements. 3. Third-Party Retailers If you need specific types of boxes or

: For larger quantities (packs of 10 or 25), you can order them for free at the USPS Store . They will be delivered directly to your door at no cost.