Emily from SWISCO responded:
June 13, 2022
Hi there! This old Miami operator isn't made anymore but I believe you can use our 39-054 to replace it. Look it over and see what you think. The only issues would be that the installation holes may not be exact and the slot in the window frame may need to be filed to allow space for the arm but if you're handy then you should be able to get it to work. |