Hello friendly users I have a very specific question about Po boxes. I want to purchase one so nothing will be sent to my own home. The vendor I am buying from has confirmed that the order I want will come in a c5 envelope. That is 6.4in by 9in. The only two options on the USPS website are 11in by 5.5in or 11in by 11in the price difference is reasonably large between the two so my question is will a c5 fit in a 11in by 5.5in. I appreciate your help in advance.
/r/theyfailedmath