I do not have much information about the cranks we need except for the fact that we need 2 left operators and 2 right ones. I believe they are split arm operators? I am not sure though.
Emily from SWISCO responded:
November 22, 2022
Hello and thank you very much for waiting during this busy season. You're correct; this is indeed a split-arm operator. Our 39-171 and 39-172 look like they'd be good matches but I recommend comparing the dimensions with your old assembly to confirm they align with what you need.