Dave Sr. from SWISCO responded:
July 25, 2017
I'm afraid your operator is discontinued, and there is no known working substitute available on the market. However, I note that your operator has a metal sill-mount plate. I wonder if you could possibly use our 39-315 and 39-316. There is no guarantee that these will work, and it may require adaptation of the sill, but it could be worth considering. See what you think.
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