Ideal Security's best-selling patio door security bar is now even better, with the addition of our childproof anti-lift lock! Add safety, security, and a visual deterrent to your sliding patio door. 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. Visual deterrent: mounting the bar in the middle of the door also adds a visual deterrent, making the bar clearly visible to potential intruders who won’t even bother trying. 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" to 47-1/2" wide, the SK110 will easily fit most doors, so it can be installed with no cutting. Simply fasten the brackets at either end of the bar to your door frame with just a few screws. The saddle can be installed on the door jamb or door frame in two different positions, depending on whether your door is on the inside or outside track. See instructions for more details. Pivots up: The bar pivots on its bracket, and is stored out of the way in the door frame when not in use. Advanced materials:The bars are made of extruded aluminum (the same material used to in cars and airplanes) to be both lightweight and strong.