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Casey from SWISCO responded:
December 15, 2020
With this combination of attachments, you could have either an S380-17 or S385-17 channel 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 1620 spring strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns. ![]() |