I would like to replace these on 2 of my windows. Total 4 mechanisms needed. 25" channels.
Tom from SWISCO responded:
September 11, 2019
Hello, With this combination of attachments, you could have either an S380-25 or S385-25 channel balance. You 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 a 2440 spring strength option for your 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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