We have a big house build in 1980s. All aluminum widows were made Ryland co. some of windows have different sizes that I will forward them to you. I have to replace all Channel balance with different measurements. Pleas help us to find the right size/
Thank you
Fred
Casey from SWISCO responded:
September 25, 2020
Hello, It looks like you have either our S351-22, with a 15-002 bottom attachment, or S390-22, 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 2130 spring strength option for your replacement balances. Thank you! Comparison of the S351 and S390 balance shoes.
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