Truth 30710 casement operator

A home owner from PA says:
Trying to figure out what to use to replace the Truth operator shown. The number stamped on the hinged arm is 30637 and the arm os about 4.5" long. The long arm is about 9" long.
On the rotator cover, the number stamped is 30710.
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Tom from SWISCO responded:

Hello! I recommend looking at our 39-032 EntryGard casement operator first. Carefully look over our dimensions and see if they match up. If they do then I think this is your best bet.

Dimensions for 39-032
Dimensions for 39-032
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