Designed for single or double doors (out-swinging functions) Features a unique, patented, hook-on/lift-off operation Use of a padlock is optional to secure bar Zinc chromate finish All parts are made of steel Standard size for 36" doors No frame preparation required Each bar supplied with caution sign Finish: Gray Package includes: 1 square tubing that installs permanently on the door. 1-1/4 square tubing with L bolts that go across the jamb. Actual length of the 1 and 1-1/4 bars: Take the width of the door and subtract 2-1/2 for the 1 bar. Take the width of the door and add 2-1/2 for the 1-1/4 bar.