Window operators

A quick learner from USA says:
I need replacement operators. The arms are 9
User submitted photos of a window operator.
Profile picture of Donna
Donna from SWISCO responded:
This looks very similar to our 39-020. The mounting holes are different, but it seems to at least mount the same. It also has the same sized arm. You might want to consider it as a replacement. I also recommend that you use it with our 39-520 track.
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