Need new Anderson casement operator

A home owner from Baltimore Maryland says:
Having difficulty finding the operator for this Anderson Casement window. The arm at the end of the operator is about 4 1/2 inches please help
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Emily from SWISCO responded:


Start by taking a look at our 39-264 operator. I suggest removing your original operator from the window to confirm that your dimensions match up to ours. 

If your window was made anywhere from 1995 to 1998, the 39-264 won't install on the sill properly. As a result, you'll need to purchase the 39-362 adapter plate separately. 

Dimensions for 39-264
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