Frame flange corner

?Hi, this is a picture of my broken corner. As you can see the other 3/8" flange is broken off. This is for my screens. I could use about a hundred of them. I hope this is enough to allow you to know what matches up my part that you have. When I looked, it looked like your part number sch 290wh or 340wh was close. They are white screens. I am really in need of help with this and would very much appreciate your help.

Hi Tom, thanks so much for following up with me. Thaw one that is throwing me is my flange is just straight without those teeth like extensions. I think the most critical part is where your 9/16 is mine is. 3/8. Your 7/16 on mine is more like 5/16. Finally your 11/32 is my 5/16 (close). Sorry to be a problem, that 3/8 part is important otherwise I don't think I could push it in to the open tubing that surrounds the perimeter of the screen. I hope you will give it one more shot and maybe have a little closer solution to the dilemma. Thanks so much again for what you are trying to do for me. Sincerely, Craig Markley