Andersen narrow line sash balance

A handy person from Michigan says:
Looking for part number BF5 10#31 2 87
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Casey from SWISCO responded:


Your 10#31 stamp indicates that you would need the 24-1033 to replace your Andersen sash balances. Thanks for posting! 

How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
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