Balance springs

A quick learner from Deland, Fl says:
Unfortunately both springs came loose from window. There is a part number on the channel section, 2430Y
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A quick learner from Deland, Fl says:
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Additional photos and measurements
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Casey from SWISCO responded:

Hello,

It looks like you have either our S351-25, with a 15-002 bottom attachment, or S390-25, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2430 spring strength option for your replacement balances. Thank you!


Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
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