Andersen Sash Balance Replacement Part Number

A quick learner from Pennsylvania says:
Hello,
I have attached a picture of an Andersen Sash Balance.
What would the replacement sash balance number be?
Thank You
Thumbnail of the uploaded file named 12#27
Profile picture of Tom
Tom from SWISCO responded:

Thanks for reaching out to us. Based on your old stamp of 12#27, I recommend the 24-1231 Andersen sash balance. This should work well for you.

A quick learner from Pennsylvania says:
Thank You
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