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tommy50607 · ‎10-20-2017

I want to ship a couple lightweight things, less than 10oz but 2-3 inches thick. One is a metal cup and another is a metal bowl. Does USPS first class have a max thickness? I want to put it in a bubble mailer. What is the cheapest way to ship it?

emerald40 · ‎10-22-2017

@greatwebcontent wrote:
You got almost all the way there, and then stopped... and even at that, you didn't state a conclusion (like: "Yes, the limit is xyz", or "No, there is no limit")

"When a First-Class Mail item exceeds any one of the maximum measurements of a large envelope, it is classified and priced as a package (parcel)"

This says that if a First-Class Mail item exceeds, for example the thickness of 3/4 inch thick, the mail item is classified and priced as a package (parcel). That's "USPS First Class Mail Parcel".

So, to finish it off, you have to answer, what is the maximum thickness (or other dimension) of a "USPS First Class Mail Parcel".

As others have stated (I haven't looked it up), the maximum package size for "USPS First Class Mail Parcel" is 108 inches of combined length and girth. Which if it was that big, it would most likely be over the weight limit of 13 ounces for "USPS First Class Mail Parcel" .

So in that case, it would probably ship by "USPS Priority Mail". Again here, (I haven't looked it up), the maximum package size for "USPS Priority Mail" is 108 inches of combined length and girth.

I hope I got all that correct... if not, I'm sure someone will (thankfully) correct me.