The BSL Cable Prime Window Restrictor is the perfect addition to your home, providing you with safety and security where you need it most. The window restrictor is suitable to fit windows of numerous sizes, which is ideal for windows of metal, plastic, aluminium and wooden construction. A secure, all-metal design enhances the quality of this patented restrictor, providing you with the confidence you need within your own home. The primary function is to prevent your little ones from being able to open windows, which can potentially lead to safety hazards. Correct installation and usage will help to prevent any accidents or home injuries. In addition to this, the restrictor can also aid against break-ins and any unwanted entry into your home. The installation process is simple and will take under two minutes to fit against your windows. It is screw-fitted, which guarantees that it will be securely fastened after being installed. With a simple method of use, you can use the included keys to lock and unlock as you wish. Features: Prevents your little one from open windows at home Fits to various types of windows with a secure fit All-metal design enhances both sturdiness and security Two minute installation process with included instructions Screw-fitting for guaranteed installation safety Simple method of use with a lock and unlock mechanism