The thicker part of the arms are just about 7/16" wide, but with the flange thing they're a bit under 5/8" wide. The thickness of the arms is just about 3/8". Back corner to arm tip is 2".
Bob from SWISCO responded:
June 15, 2021
We don't have this exact corner, but it's very similar to our 95-169. Could you potentially get this to work in your screen frame? Look it over and let me know what you think.