The screens have two different type corners. Upper corners have tab that goes inside the window frame.
The first pic is a lower screen corner. The second pic is a lower corner i had to destroy to remove. The flange of the corner is broken off
The third pic is info that are on my windows.
The fourth pic is an upper corner when viewed from the inside of the window. The fifth when viewed from the outside.
Please let me know if there is additional info I maybe able to send to you.
I appreciate your help.
Thanks,
Dave