: You can get FedEx One Rate boxes for free at any FedEx Office location or by ordering them online through the FedEx website .
: Independent stores like PostNet or Mail Boxes Etc. typically stock various flat rate options and can help with packing.
While they operate differently than the USPS, they also offer fixed-rate shipping options with dedicated packaging.
If you need specific types of boxes or want to buy in bulk from other sources:
: 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
: Retailers like Staples and Office Depot often carry flat rate boxes. They may provide them for free if you purchase shipping services through them, or they may sell them as part of their standard inventory.
Are you shipping something or going a long distance , which makes flat rate the best choice for you?