My printer has been mistaking the Letter setting as A4 for *years* now. Having a contract to send back for a prospective sub-contract lead me to investigate why.

I did not find my answer as to why all the GUI apps were sending the wrong option to CUPS.

What I did find was the `lp` command.

`lp -o media=Letter -d SOME_PRINTER <document>`

My page is formatted properly. Simplicity folks! 👏