Andersen window balance

A home owner from Columbia, MO says:
April 18, 2022
Number stamped into the balance is E29 9#31 8-85. There is also a faint number on the balance 11600-17. Please advise.
Thumbnail of the uploaded file named IMG_20220418_111554681.jpg
Profile picture of Lauren
Lauren from SWISCO responded:
April 20, 2022

Hello, thank you for posting,

Please review the 24-939 Andersen sash balance that can replace balances marked with 9#31. Let us know if you have any additional questions. 
Andersen Sash Balance, 927, 931, 937, 939
Andersen Sash Balance, 927, 931, 937, 939
24-939
$54.20
How to replace an Andersen Window Balance
How to replace an Andersen Window Balance
VIDEO
WATCH >
Andersen's Narroline Sash Balances
Andersen's Narroline Sash Balances
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.