window crank system

Question

Hello, I am looking for which one I have.
This is the left window of a double window.
which one is for the right window and which one is for the left window?
thanks.

User submitted photos of a window operator.

Tom · Accepted Answer

You might want to start out by looking at our 39-031 and 39-032. Carefully compare them to your own hardware and see how they match up.