SWISCO - The Replacement Hardware Authority

Need to order replacement parts

A contractor from Madison Heights Michigan says:
I need to order several right and left units but want to be sure to order the right ones, some of the part numbers on the old parts:
31538
30744
45273
Photos attached
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting! Have you seen our 39-031 & 39-032 EntryGard Dual Arm Operators? These appear similar to your own hardware. Compare them to your own operators and let me know what you think.
A quick learner from kansas says:
did the 39-031 work as a replacement for the 45273?
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