We don't have this exact corner, however you may want to look at our 95-004. Service people like to use this because you don't have to pin in the corner key. Let me know what you think.
A quick learner from Harwich, MA says:
July 17, 2013
That looks like the one.
I was wondering how to get a new one to stay in since I had to drill out the indentations in the frame in order to get the old pins out. The little spring at the end is an interesting solution.