Roto awning window surface bracket

A quick learner from Dakota Illinois says:
Hi. The plastic on the surface bracket broke and I can not find this piece. It is Roto brand and the aluminum is 6.25 inches long. Any help to get replacement parts would be appreciated. The model numbers are from the bottom of the crank unit.
User submitted photos of a window operator.
OP06-1505
OP06-7590-08
09-14-11 111066
Profile picture of Paul
Paul from SWISCO responded:
This looks like our 39-340 Roto awning window bracket. Look it over and tell me if you agree that this is a match. It's only 4" long, as opposed to your 6.25", but it may still work. Roto may have shortened the bracket but I would think the plastic part is the same size.
Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
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