Originally Posted by Jose263
ab - I'm not sure why USPS still calls them flat rate priority mail boxes - The last few that I have mailed were all different prices based on the destination zip code.
If the box doesn't say 'Flat Rate' on it; it is not flat rate. The Priority Mail Box looks the same as the Flat Rate. The Flat Rate box should be at the advertised rate regardless of the domestic mailing zone.