Need help identifying broken screen corner

Thanks for reaching out.

To recommend the most accurate replacement, we'll need know the width and thickness of the frame.

It would also really help to see a photo of the corner removed from the window. Although, I understand it may be difficult to remove them.

We have had this question before. These are Summit window Screens. I don't believe these corners are still available but I've found that the 95-207 could possibly work in the screen frame. You would need to thicken up the "leg" of the corner with tape (or something else) to account for the space.

I also regret to say that we do not have any replacements for the locking pins, however, you may be able to install the 70-009 pull pins.

Alternate image for 70-009

If these parts do not work as replacement, I'm afraid the only other option would be to make new screens.