Casey from SWISCO responded:
January 17, 2023
Hello, I agree that your balance looks like a match to the S395-37. The 36 5 stamp on your metal channel indicates that you would need a 3650 strength option to support a window sash between 30 and 35 lbs. Take a look and let us know if you have any other questions. Close up view of the S395 balance shoe.
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