Window crank hardware

A handy person from CT says:
Looking for this window crank or something that will work
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Emily from SWISCO responded:

Hello!

From what I can see, this looks like either our 39-253LB & 39-253RB or our 39-438B & 39-439B operators. Take a look at the video below that will help you choose the correct replacement. If you need a new handle and cover, please see our 39-375 or 39-451 , depending on the style you prefer. 

How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
VIDEO
WATCH >
Comparing the 39-253LB & 39-438B Operators
Comparing the 39-253LB & 39-438B Operators
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
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