Two springs in this. One says #6.5, 35" and the other is #3.5 35". I have Simonton tilt in window. There were two springs within this one balance. Thank you.
Bob from SWISCO responded:
September 16, 2020
This looks like a 15-111 Pivot Shoe. If the coils are 1/2" wide, then you need the S160-3 3.5 lb spring and 160-6 6.5 lb spring. Let me know if you have any other questions.