Von Duprin is a manufacturer of many lock hardware products including panic bars. for many years they have been known as the Cadillac of lock hardware and their quality is still to that level to this day. If there is a panic situation and a great number of people rush the door, a panic bar across the door will open the latch securing the door when pressed to ensure safety. Each crash bar is tested against UL listings standards to ensure their quality and safety. Also, Von Duprin is still made in America.