Need a Andersen sash balance replacement for model 11600-3

A quick learner from Belmont ma says:
May 31, 2021
Hi I need to replace sash balancer on 12 windows. Height 74 width 32 .

I think model number is 11600-3

Please let me know what model I need to buy

Thanks
Davide
Thumbnail of the uploaded file named 5AC5FC42-C39B-42D5-98B0-C84BF131B2A2.jpeg
Thumbnail of the uploaded file named BL23 10L 10-85
Profile picture of Paul
Paul from SWISCO responded:
June 2, 2021

Greetings. Judging from the code numbers and size, you will need the 24-11R (for the right-hand window, looking in from the outside), and then 24-11L on the other side of the window. 
Andersen Sash Balance, 11R, 10SR
Andersen Sash Balance, 11R, 10SR
24-11R
$54.20
Andersen Sash Balance, 11L, 10SL
Andersen Sash Balance, 11L, 10SL
24-11L
$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.