3 ways to child-proof a window

How to child-proof a window: an overview of modern safety devices that limit sash opening while still allowing ventilation. They reduce the risk when a child can reach the windowsill.

These devices are fitted without replacing the window and do not restrict its usual functions.

What the video shows

• a child lock in the lower part of the window allows ventilation while preventing the sash from opening fully;


• a lockable handle (with a key) blocks opening; the key is kept out of the child's reach;


• the safety devices do not restrict the window's normal operation — ventilation remains possible.

Child-safety mechanisms are a simple way to make metal-plastic windows safer for the family.