Andersen Windows Spring unit

A home owner from Michigan says:
Good day.

I have several windows with these spring units, I was hoping to identify a replacement as most have at least one broken string. Each spring has the ID "F3 12 31 1 171" stamped on it, though the 12 31 part in the middle is bigger. Do you have a replacement spring unit for these?

Thank you.
User submitted photos of an Andersen window balance.
A home owner from Michigan says:
One more file, this time with dimensions. 2 7/8" x 6 1/4".
User submitted a photo of an Andersen window balance.
Profile picture of Mike
Mike from SWISCO responded:
Thanks for posting!

Take a look at our 24-1231 Andersen Sash Balance!

Also, don't forget to check out our installation video!
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