Recently chosen as ""The best sliding door security bar" according to Business Insider! (http://www.businessinsider.com/best-diy-home-security-products/#the-best-sliding-door-security-bar-6) NEW! Childproof Anti-Lift Lock: We've listened to your feedback and added an optional clip that sits behind the saddle. This prevents children from raising the bar and getting outside and protects against potential intrusion when the door is locked in an open position. No more bending down: Because the bar is mounted at arm height, you won't have to bend down every time you want to open the door. One-touch adjustability for ventilation: The bar can be easily adjusted and locked at any width, so you can lock your door in a slightly open position, staying safe while still letting in fresh air. Easy to install: Adjustable from 25-3/4 in. To 47-1/2 in.