If you can somehow find the specs, here is what I made so I could get a new label made.
I think you can go to any sign shop or someone who has a plastic engraving machine, I was lucky enough that my brother has one at his work.
It is just 1/8" thick yellow plastic that is black underneath so when engraved, the letters are black. I then attached with double sided foam tape (3M tape).
Just input your numbers and you should be all set