It provides protections against slamming or opening window on blow days, improving comfort and This adjustable window limiter is suitable for casement doors and window The limiter adopts a hook type design with multiple slots for easy operate and high stability, and is not easy to fall off Multiple slots for easy operate The tilting window is make of Carbon Steel, which is rustproof and wear-resistant With window you can open window as needed and control and adjust the opening angles, Manufacturer: Xjdzineq