Need balancer for Milestone Single Hung S 1000

A quick learner from holiday, fl says:

I need help ti get the correct S series for my balancer. Is it S 380 or 385, or something else.

Thanks,

Ted 

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A quick learner from holiday, fl says:
Is code 28-C-30 same as 2830?
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Casey from SWISCO responded:

Hello,

I agree that your channel balance resembles either the S380-29 or S385-29 but you’ll need to measure as shown below to choose between the two. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. 

You'll also need 2830 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.
Comparison of the S380 and S385 balance shoes.

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