Dave Sr. from SWISCO responded:
February 9, 2016
I do think these could work as replacement operators for the old Getty. However, the bearing you show at the end of your operator arm appears to have a nylon collar around the metal bearing. You might need to replace the track because of this. Look at our 39-501 and 39-504 to start, though we have others that might fit your window. Also make sure to check the diameter of your bearing and compare it to the bearing at the end of the 39-044 and 39-045. Ours is 9/16"
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