Casey from SWISCO responded:
December 10, 2020
Hello, Take a look and compare our S380-28 or S385-28 channel balance to an undamaged balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need 2740 spring strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns. Comparison of the S380 and S385 balance shoes.
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