Security fixtures window
The 12mm and 19mm type window fixtures have similar design feature to that of an expandable door. The only difference is that once it is installed, fixed on 4 sides, you will not be able to open and close the robo, it’s a fixture. It is normally fitted inside the window reveal. You may however select a robo door option pending your requirements. The fixture is just the more affordable option, providing you a maximum window protection.