Tom from SWISCO responded:
December 28, 2020
The 39-543 is compatible with a few different operators, which is why we don't have any one type associated. One common sighting is our 39-239B, but I don't know if that's what you have. If possible, I'd like to see a photo of the operator installed on your window now. That will allow me to find something applicable. |
Tom from SWISCO responded:
December 29, 2020
Ah, I recognize this part. This is the old Roto straight arm operator. We did sell this for a while, but it was discontinued around last year. To my knowledge, there is no substitute available for it. I am very sorry for the inconvenience. |