SWISCO - The Replacement Hardware Authority

Please Help me replace These Andersen Balancers

A quick learner from Cape Vincent says:
I need to know what replacement part I need for my window. Thank you for your time.
User submitted a photo of a window balance.
A quick learner from Cape Vincent says:
This is a different window/photo from my last email. Please let me know which replacement part that I need. Thank you in advance.
User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Thank you for posting! I think you should check out our 24-637 for the first picture, since this can replace balance boxes stamped with 6#31, and the 24-939 for the second picture, since this can replace balance boxes stamped with 9#27.
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