A quick learner from Randolph Ma says:
August 25, 2015
My old Ventarama opener is broken the thread on the metal hook is stripped. Will your opener work.
Dave from SWISCO responded:
August 26, 2015
We don't have this exact operator, but I wonder if our 39-379 could work. It appears to work on the same principle as your operator, but I'm not sure. What do you think?