SECURITY PANEL WITH FORMED END EDGES FOR INTERLOCKING WITH A CHANNELLED FRAME AND ROLL FORMING METHOD

摘要

Disclosed is a panel having opposed side edges formed using a single bend to extend back over a central portion of the panel between the side edges so as to form side retaining rails for retaining the panel within a channelled frame of a closure, wherein the opposed side edges are bent by a method of roll forming, and wherein the side retaining rails have a tip configured to abut against a lip of the channelled frame to retain the panel in the frame.