Tom from SWISCO responded:
October 5, 2012
Thank you for posting on our Discussion Board. It's hard to tell what type of operators you have without seeing the entire unit removed from the window, but based on those serial numbers I would recommend our 39-031 & 39-032 EntryaGard Dual Arm Operators. Please compare these to your existing operator and let us know if the differ in any way.
As for the screw, please see our 33-079.
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