awing window operator

A quick learner from Honolulu, Hawaii says:
I would like to replace 11 awning window operators due to heavy corrosion. My casement windows use Truth hardware but I cannot find any identification makings on the awning operators. Your part number 39-239 looks very close but I am unable to determine measurements because of the corrosion.

Can you help identify the part?

Also, my current part has stainless steel arms that seem to weather better than the other parts. Is there a full stainless steel replacement?
A customer submitted photo of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for contacting us! I agree, our 39-239 Maxim Awning Operator appears to be the closest match that we have. I cannot say for certain, though, without knowing your dimensions. You will just have to try your best to determine if your measurements match up to ours. That is the only way for you to know for sure.

Unfortunately, we do not have a stainless steel version of the 39-239.
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