P78 12#27 1-86 Andersen Balance

A home owner from Red Hook, NY says:
I am looking to replace the balances in an Andersen window. The balances on both sides of the window are stamped 11600-17 and also P78 12#27 1-86. Which balances do I need?
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Jasmine from SWISCO responded:

Hey there, thanks for reaching out. Your Andersen Sash Balance balance appears to be our 24-1231. Given the 12#27 stamp on the metal, I am confident this is the replacement you'll need. This balance can be used to replace balances stamped with a 1226, 1227, and 1231.

Let me know if you have any questions.

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