Looking to replace with new looks like the shoe is a 1 inch 1/4 1/2 inch wide metal housing 28 inches in length
Bob from SWISCO responded:
March 10, 2024
Thanks for posting. This looks like a S775-28 tilt-window channel balance. For the shoe size, choose 1-1/4"; for the stamp option, go with 28C. Let me know if you have further questions.