Milgard crank and arms

A quick learner from Oregon says:
Hi I am looking for these 1 each LH RH
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Lauren from SWISCO responded:

Hello, thank you for posting! 

This looks like either our 39-253LB & 39-253RB, or the 39-438B & 39-439B Operators. Review the dimensions to see how they compare to your original. The only difference between these two sets of operators is the guide at the end of the link arm. Please review the video below to compare the correct option. 

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 >
How to identify casement and awning operators
How to identify casement and awning operators
GUIDE
READ >
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