Window balancer

A quick learner from Columbus ohio says:
I am looking for the window counter balancers for my Anderson windows. The parts number is very hard to read. I have attached a picture and when zoomed in appears to be. D28 8#31 w2-84
Thank you for you help in advance.
Thumbnail of the uploaded file named 8#31
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Lauren from SWISCO responded:

Hello, thank you for posting,

Please review the 24-837 Andersen sash balance that replaces balances marked with 8#31. Let us know if you have any additional questions. 

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