Casement window mechanism does not work. Needs replacement part

Question

Need help identifying this part. This an old window. No brand name. No part numbers. Maybe bought at Menards.?

Emily · Accepted Answer

Hey there!

Thanks for reaching out to us. From what I can see, this looks like it may be either the 39-253RB or 39-439B operators. The best match will come down to the design of the guide used at the end of the operator's arm. The video below will go over exactly what I mean.

Let me know if you have any questions!