BP21 12#27 11 - 85 Andersen

A handy person from Illinois says:
looking for Andersen balancer BP21 12#27 11 - 85
left side from inside of window
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Emily from SWISCO responded:

Hi there! For your 12#27 stamped Andersen balance box, you can use the 24-1231. This is specifically designed to replace balances with such a stamp. Let us know if you have any questions! 

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