27c window channel balance

A quick learner from Granbury Tx says:
I HAVE 11 WINDOWS IN NEED OF REPAIRS
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A quick learner from Granbury Tx says:
Channel balances # 27c 11 windows in need if repair
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A quick learner from Granbury Tx says:
IM ALSO GOING TO NEED THE BLACK TOP COVERS TO HIDE CHANNEL BALANCE
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Casey from SWISCO responded:

Hello,

It looks like you have either our S351-28, with a 15-002 bottom attachment, or S390-28, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. Based on your 27C stamp code, you'll also need a 2730 spring strength option for your replacement balances. 

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

There's a good chance that we can supply a replacement for your top sash guide as well but we would need to see an undamaged version removed from the window to compare to our inventory. Thank you! 

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