Casey from SWISCO responded:
September 14, 2023
Hello, I can't tell you the manufacturer of your window but your operator assembly reminds me of the 39-326 shown below. We also offer the 39-325 opposite-handed version. These parts are used with the 39-232 handle and 39-535 sash bracket. Take a look and see what you think. Thank you! Dimensions for 39-326
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