window channel balance 28B BS1 BM

A home owner from Springfield, Pennsylvania says:
August 24, 2021
These windows are original to the house in 1999. Some windows are very difficult to move up and down. The metal portion of the unit measures 28" long by 1/2" by 1/2".
The balance is attached to the top of the window channel by one screw. Even with the balance out, it's still hard when pulling down on the pulley.
Thumbnail of the uploaded file named 100_8614.JPG
Thumbnail of the uploaded file named 100_8615.JPG
Thumbnail of the uploaded file named 100_8616.JPG
Thumbnail of the uploaded file named 100_8617.JPG
Thumbnail of the uploaded file named 100_8622.JPG
Profile picture of Bob
Bob from SWISCO responded:
August 30, 2021

It looks like you have an S775-28, with a stamp option of 28B. Measure the size of the shoe to see if you need a 1" shoe or 1-1/4" shoe. Let me know if you have any other questions. 
28" Series 775 Balance
28" Series 775 Balance
S775-28
$21.91
How to install a S775 balance
How to install a S775 balance
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.