They both can go at first class letter rate, depending on how much stuff you put in them (no more than 1/4" thick).
Decades ago, we bought these by the thousands so that we could send 8.5 x 11 documents with #10 BRMs.
Still available !!!
https://okpaper.com/toolbox/envelope-guide
#12 ... 4.75" x 11"
#14 ... 5" x 11.5"
Cheers,
/s/ ikeyPikey
I just picked up a box of 4 3/4 by 11 inch envelopes at a yard sale..if they go for first class postage i can save a lot instead of using the 6x9 manila envelopes...if not i will use them for storage.
re: 4 3/4 by 11 inch envelopes
They both can go at first class letter rate, depending on how much stuff you put in them (no more than 1/4" thick).
re: 4 3/4 by 11 inch envelopes
Decades ago, we bought these by the thousands so that we could send 8.5 x 11 documents with #10 BRMs.
Still available !!!
https://okpaper.com/toolbox/envelope-guide
#12 ... 4.75" x 11"
#14 ... 5" x 11.5"
Cheers,
/s/ ikeyPikey