that is the way the flat rate packaging works, but there is different packaging for documents or books separate from (generic-packaging) the p.o. has choices. i use flat rate boxes all the time...and regular tyvek envelopes you can stuff...but document envelopes are for documents.
Originally Posted by pab58
I thought the deal is: "If it fits, you can use it." It doesn't matter how much it weighs. Has there been a change? :?