single hung metal bathroom window

A handy person from sonoma, california says:

Length of metal: 22 15/16th

at bottom stamped into metal: B.S. I. and the #2240

I need to replace both balances, so need to purchase 2 balances once you identify the part

thank you for your guidance. It was impossible for me to accurately identify which part was mine.

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Emily from SWISCO responded:

Hello!

With this combination of fittings, it looks like you have our S395-23 channel balance with a 2240 stamp option. If you have any questions just let us know! 

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