Window bars prevent entry & keep people from even attempting a break in. Customers leave their windows open for air & ventilation all day or all night once the bars are installed. When you leave the house there is no need to go around & close all the windows. Code requires the use of fire releases on bedroom windows. These kick style emergency releases are United Laboratories approved & are located near the floor below the window. Customers comment that because of the safety the window bars provide they no longer worry when they are away from the house or go to sleep at night.