15x22mm right angle corners for 11mm section

This part is used for securing 11mm section pine frames, in particular the "Daiso pillbox small component rack" pictured. This is a cutdown version of the more generic 11mm corner bracket. It is meant to be fastened with hot glue, though there is a hole in 1 side.

https://youtu.be/HDgzlGBJ6I4