Plastic screen corner

We sell a variety of screen corners, but I'm sorry to say this isn't something I can identify based on the provided information. In order to help, I'll need a clear picture of the corner removed and shown without obstruction, if possible. I also need to know the thickness and depth of the frame itself, to ensure that we find something that fits in the channel. Would that be possible?

Please note that depending on the age of the screen, there is a chance we can't help. I will of course do my best, but I wanted you to know that now before we go any further.

Thank you. Without seeing the an unobstructed shot of the corner I can't give a precise recommendation, but I can show you our selection of 3/8" screen corners here. Your next step should be to review our selection and use your original part as a reference to verify the best match.