I have a number of Crestline Vinyl casement windows which use the 39-031 EntryGard dual arm operators. I have a number of the 39-253L Maxim dual arm operators. Is it possible to replace the entrygard operators with the maxim operators and what additional hardware would I need to replace?
Tom from SWISCO responded:
July 5, 2016
I don't think the 39-031 and 39-253L are interchangeable, unfortunately. There are too many differences and I don't think you could get the 39-253L to work without extensive handiwork. I recommend sticking with the 39-031.