Viking window balance

A handy person from San Francisco says:
November 3, 2021
Hi, I am in need of a viking window balance. It is 1/2" (9/16") wide and 35 1/8" long. The only identifying marks that I can see is the number 3430. I believe the window was made in the year 1996.
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Emily from SWISCO responded:
November 5, 2021

Hello!

It looks like you have either our S351-35, with a 15-002 bottom attachment, or S390-35, 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 3430 spring strength option. 

If you have any questions just let us know! 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
35" Series 351 Channel Balance
35" Series 351 Channel Balance
S351-35
$12.05
35" Series 390 Channel Balance
35" Series 390 Channel Balance
S390-35
$12.05
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