Exit Security Bar SB-01-0042Exit Security Bar designed for 42″ door opening. This bar features a unique, patented, hook-on/lift-off operation that is easy to use and emergency sensitive. Use of a padlock is optional to secure the bar in the bolted or unbolted positions. (Please comply with local building codes.) *** Please note:This is a special door size, make sure you are measuring the door in the open position – do not measure frame to frame with the door closed. See measuring guide in the image.