Replacement for window operator

A home owner from Greeley, Colorado says:
I am looking for a replacement for the window operator in the attached photo.The longer arm measures 10 1/4" and the shorter arm is 4 1/4". Number 31538 is stamped on the shorter arm, as well as the letter "L". Also, "Entryguard" is stamped on the longer arm. Please advise me on my replacement option.
Thanks for your reply,
User submitted a photo of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting, Ray. Take a look at our 39-031 and 39-032 and let me know if these can work as a replacement for this operator.
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