Truth window lever operator

A quick learner from Colorado says:
Hi , wondering how to identify this piece to replace ? It has #30008 on one arm and 30897a on the other arm . I need to replace the whole window sill piece and I assume the arms too as it seems it's one piece .
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Bob from SWISCO responded:

See our 39-070 Awning Operator to start. Please look over the dimensions and specifications and see if that works for you. 

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