2-1/2″ X 2-1/2″ X 3/4″ corner brace. Replacement for Part #1693
5/8″ X 5/8″ corner brace.
3″ X 3″ X 7/8″ corner brace
2″ X 1″ X 1″ corner brace.
3-1/4″ X 1″ X 1″ corner brace