USPS flat-rate box MEDIUM - medium size box two tshirts, small electronics without retail box (mostly used stuff purchased on eBay), compact cameras, cell phones etc. Note: Forwardo provides 50% discount on fees for consolidated shipping if the shipment fits the envelope. Envelope cannot be deformed much otherwise envelope would lose its status of flat rate and would be charged standard PMI rates which is more than twice as much. envelope can fit tshirt, small book or couple of magazines. These flat rates are provided only within USPS Priority Mail International (later just USPS PMI), they cannot be used with Express shipping Anything that fits the packaging and is upto weight limit ships for one flat price.

All packaging is provided by USPS free of charge.

In 2008 USPS introduced new format of shipments called Flat-Rate.įlat rate envelope or package has fixed format, there is one size of envelope and three formats of cardboard boxes that you can ship for fixed price. (flat rate shipping in specially formated cardboard boxes)

Usps med flat rate box size