Dave Sr. from SWISCO responded:
September 20, 2016
I'm afraid I couldn't find a corner with the same measurements as what you show. However I'm leaning toward our 95-002 self locking corner key. The corner is smaller at .187", and the locking spring at the end comes in at .197". However, you say you have a Silverline screen. I have personally used the 95-002 in Silverline screens in the past and they seemed to hold quite well. I think it could be your best option. Let me know your thoughts.
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