DFJ1000 Features: * Childproof door lock and pinch guard * Installs in seconds without tools, tape or hardware * Works with all styles of door knobs and lever handles * Doubles as a pinch guard to help protect little fingers from painful injuries * Automatically locks when the door is closed and secures the door in a partially cracked position * Allows fresh air to circulate through the secured room, helping to maintain a comfortable temperature when heating and cooling * Adjustable height and easy operation * Operates from both sides of the door * Mounts at any height * Easy to remove and very portable, perfect for those trips to grandma"s house * Works great for pets * Soft rubber grips protect mounting surfaces * Fits standard 1.38"" thick interior doors * Requires standard rectangular door stop moulding