Recommendations on proper window channel balance

A handy person from CA - California says:
November 11, 2020
Hello,

I was looking for some help to find out what type of window channel balance I would need. The current channel balances have the following stamped on the rail: 2620 FA BSI.
This is for a Value Window that is 28.5" with a channel balance that is 25" long.

Let me know if you need more info.

Thank you
Profile picture of Bob
Bob from SWISCO responded:
November 16, 2020

Thanks for writing in. Can you remove the balance from the window and show us any attachments or fittings on either end? Can you also confirm the metal channel length? It would be a little unusual to have a balance stamped 2620, but be just 25" long. Many thanks. 
25" Series 751 Channel Balance
25" Series 751 Channel Balance
S751-25
$11.25
How to install a ribbed tilt channel balance with knife lock shoe
How to install a ribbed tilt channel balance with knife lock shoe
VIDEO
WATCH >
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.