Sash balance for Anderson bay window

A home owner from Peabody, MA 01960 says:
May 15, 2023
Hi!
I am trying to find the correct sash balance for my center window in 8' bay. This window was installed in 1986 so my guess the part numbers have changed since then. The number stamped on the old balance is
E48 9#27 9 86 as shown in attached photos.
Hope you can help.
Thanks in advance
Greg
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Thumbnail of the uploaded file named IMG_2046.jpeg
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Emily from SWISCO responded:
May 17, 2023

Hello, Greg!

We can definitely help with this. Our 24-939 balance is my recommendation. This is meant to replace balance boxes with the 9#27 stamp. 
Andersen Sash Balance, 927, 931, 937, 939
Andersen Sash Balance, 927, 931, 937, 939
24-939
$54.20
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