Window Operator/Replacement

A contractor from Phila pa says:
I need the assembly from the pics the knob is striped and no longer operating
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Bob from SWISCO responded:

Thanks for posting. How does our 39-220B Dyad Operator compare? Review the dimensions below and let me know what you think. For a new cover and handle, see either the 39-375 or 39-451, depending on the style you prefer.

Detail of 39-220B
Detail of 39-220B

A contractor from Phila pa says:
Ok those dimensions work for my needs
I guess I'll need to get the crank handle and cover
A contractor from Phila pa says:
Need stud bracket
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Bob from SWISCO responded:

Sure thing! Take a look at our 39-545 and 39-546. These are the stud brackets designed to go with the operator I suggested previously.

Dimensions for 39-545
Dimensions for 39-545

A contractor from Phila pa says:
Does this part require a retainer ring on any kind and if so what do you recommend
Or any other part to secure
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Bob from SWISCO responded:

No, these work much the same as your original. The arm just snaps onto the peg. It may not seem like a secure fit, but pressure from the window will keep it in place during operation.

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