Casey from SWISCO responded:
August 10, 2023
Hello, Your balance shoe resembles the 15-087 housing pivot shown below, which would use the S180 coil springs, 15-086 tandem housing, and 16-024 mounting bracket. For a 14-pound sash, you would use one S180-7 coil spring on each side. Take a look and let us know if you need anything else. Thank you! Detail of 15-087
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