Window operator right hand

A quick learner from Carol stream IL says:
Looking for replacement for pictured item
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Tom from SWISCO responded:

this looks like an older version of our Fenestra operators, the 39-344 and 39-358. However, the guide at the end of the arm on yours is way different than ours. Our parts may still work but you would also need a new 39-504 track to install on your window. Would that work for you?

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