Window channel balance

A home owner from Holmes Beach FL says:
17" channel balance 1620 BST. Need 2 replacements - interior portion is broken. Thanks so much.

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Casey from SWISCO responded:

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.

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