
A large package is a parcel (or box) whose length plus girth is over 84 inches, and less than or equal to 165 inches. USPS Priority Mail Regional Rate Box B Cost The costs of the Priority Mail Regional Rate Box B also vary depending on the zone below are the costs depending on the zone: When to Use Regional Rate Boxes Note: For large UPS packages, you may need to enter dimensions to calculate costs correctly.

PS: I've been at the PO waiting in line and see this man with two hand trucks stacked with these large flat rate boxes filled with heavy things. OK yeah, they have bigger boxes there but they are not marked red white and blue Priority with the eagle on it. The clerk also said that you can reuse these boxes. So, it sounds to me like it would be the best deal for me when sending quilts to use US Postal Service flat rate shipping boxes.

I said that most quilts I send are about 6.5 lbs (with the box) he said that weight is 'heavy.' But if you are sending it anywhere within your state or region (he gave the example for Minnesota, that the region would be the upper midwest) and/or it is not heavy, then use a regular box. He said, if what you are sending is either heavy or going a long distance, it pays to use the flat rate shipping boxes. Here is the interesting part to me, as a professional quilter that often sends completed quilts through the mail. I chose not to send it in the flat rate box. He said that if I had used a regular box, the postage would be $5.95 (the contents I was sending was light and only going about 150 miles). The Postal Clerk pointed out that postage for the flat rate box I used was $14.95, no matter what was in it. I was going to mail a Christmas present that was small and didn't weigh much and only had a medium size USPS flat rate shipping box at home, so I threw it in there thinking that the rate would be less than a regular box. I learned something interesting today at my local Post Office about flat rate shipping boxes.
