Need replacement for Truth operator 40350 / 45057

A quick learner from USA says:
My Truth operator has both 40350 and 45057 stamped on it. What is the replacement?
User submitted photos of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Unfortunately, the operator you show in your photo is no longer available. Truth recommends using our 39-027E as a possible substitute. However, you will need to notch your wood sill cover to install the newer style operator. You might want to contact a contractor or carpenter to help with the installation.
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