Widow Balancers

A quick learner from Wantagh NY says:

Looking to purchase these type of balancers. Not sure about making correct selection from website.

These are non tilt windows

forgot to add 1/2 channel

Measures 23 in and 17 in

Regards

John 

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Casey from SWISCO responded:

Hello,

It looks like you have either our S351, with a 15-002 bottom attachment, or S390, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need to locate the stamps on both metal channels to choose the corresponding spring strength options for your replacement balances. Thank you!



1
A quick learner from Wantagh NY says:
Stamps on channels as follows
On the 17 in stamp reads 1640
On the 23 in stamp reads 2230

I don't know which option to use

Thank you
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Casey from SWISCO responded:

Once you choose between the S351 and S390 by following the diagram I sent you, you'll use a 1640 strength option for your 17" balance and a 2230 strength option for the 23" balance. 

A quick learner from Wantagh NY says:
I have placed the order for the channel balances, thank you for all your assistance.

John C.
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