Need help identifying this Truth hardware

A quick learner from Indiana says:
Trying to replace this hardware on these windows, 3 out of 4 window cranks are stripped
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Emily from SWISCO responded:

Hello!

It looks like you have either our 39-253LB & 39-253RB , or the 39-438B & 39-439B . The only difference between these two operator styles is the appendage used at the end of the link arm. Take a look at the video below that will help you choose the correct replacement.

If you need a new handle as well, please see our 39-451 and 39-452 .

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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