Upgrade your window security with this practical Stainless Steel Window Stopper Compact size and easy installation make it suitable for different types of Protect your home today Suitable for various living environments, this Window Stopper adds an extra layer of Keep your home secure and give yourself peace of mind Crafted from stainless steel, this Window Stopper provides a solution for limiting or releasing window openings Detachable design allows for flexibility Enjoy air and natural light while keeping your secure Perfect for bedrooms, living rooms, or offices Install at least 9cm away from frame as shown in the diagram the slot width is greater than 13mm, choose the S model it is less than 15.5mm, choose the L model, Manufacturer: YanFengPro