Truth dual casement operator

A home owner from calif says:
Need help finding two replacements in white. I provided closeups of the stamped numbers on the arms. I hope you can help me. Thank you, Jeff
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Casey from SWISCO responded:

Hi Jeff, 

Take a look at our 39-239B Encore operator and the related items that work with it. Review the dimensions and see how they compare to yours. Thank you!

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