I am trying to locate the replacement Plastic inserts that apparently slide into the Aluminum Frame of a 5 panel Awning Window (Condo Installation) that apparently this part is the locking mechanism that when the window closed the hand crank allows a "U" shaped hook to latch onto this and brings the window pane to full closed/locked state?
It appears this Plastic insert is in the side track of the aluminum frame of the windows. I need to replace about 50 pieces as each window has one on each side of the window panel.
Charles