Need help Identifying the parts I need to rebuild 2 big windows 1 small window

A quick learner from Winter Park Florida says:

Hello, I need your help rebuilding three no tilt windows

2 Big windows have the balance with the 2020 and the U-Channel is 31" in length is 31"

1 Small window has the balance with 1220 and the U-Channel is 12" in length

Windows are very old, so please include all the parts needed to rebuild the 3 windows.

Thank you.

Joe

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Casey from SWISCO responded:

Hello,

This looks like our S377 channel balance but I'd recommend you double check your stamps and the length of the metal channel. Normally, the first two numbers of your stamp will be one less than the length of the metal channel. Your balance with a 1220 stamp should be an S377-13. I suspect that there was a typo somewhere for your longer balance. Double-check your stamp and channel measurement to be sure you choose the correct replacement balance. Thank you!

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