window balance

Quick Learner from San Diego, CA
please help me identify the window balance and let me know the replacement type/number.
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Casey
Casey from SWISCO
SWISCO
Expert

With this combination of attachments, you could have either the S380-28 or S385-28 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 2730 spring strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.
Comparison of the S378, S380 and S385 balance shoes.

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