Truth awning window operator

A home owner from Streamwood I'll. says:
I need to replace the operator pictured. It is a Truth operator p/n 121598.
Thumbnail of the uploaded file named A9BE0BD7-2B3E-402F-9A24-FDD978DBD67E.jpeg
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:

Hi there!

Take a look at our 39-239B operator, it's a newer style with a removable cover. Carefully review our dimensions and compare them to your current operator to see if they match up. 

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