Window crank ID

Question

We purchased the 39-146 Andersen Window Crank but it was wrong. The one we have has this marking on them "CWS TRARM". I have attached photos of the original. Can you match this?

User submitted photos of a window operator.

Tom · Accepted Answer

I'm afraid I cannot identify what you have based on this picture. It definitely looks like an Andersen operator, however your arm is missing. The only arm I see in your top picture is from the hinge, which is separate from the operator itself. Do you have an undamaged operator whose arm we can see? It may be best if you remove the part from the window entirely so that we can see the whole thing.