Need to find window casement operators per photos

A landlord from San Diego CA says:
Please help me. It has a 6 1/2 inch arm with truth part number 40056 on back. Tom McLean 858-688-3046
Casement operators
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
The shortest arm operator we carry is the 39-225, or the newer 39-225E, both of which have a 7-1/2" arm. I'm not sure if your window can use the longer arm, however. You would have to see if you have a little more travel space in your window track for the longer arm.
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