Screen corner

Can you give me the dimensions of your corner? Specifically, we'd like to know the size of the opening in the frame that accepts it. Thanks!

I'm afraid I could not come up with a corner key with a stop like you show in your photos. I would consider our 95-229 corner key as a possible replacement, however carefully check to see if our dimensions match up to yours. As for the stop, I believe you could use a screw like the 33-022 to act in the same way. It may not look as pretty but I'm not sure if anything else will work.