Enjoy the air and natural light while staying safe. Perfect for bedroom, living room or office Please install at least 9cm from the frame as shown in the picture. If the slot width is more than 13mm, please choose S model. If less than 15.5mm, please choose L model Suitable for a variety of living environments, this window stopper will add an extra layer to keep your home safe and secure Upgrade your window security with this practical stainless steel window stopper. Compact size and easy installation make it suitable for a variety of window types. Protect your home today! Made of stainless steel, this window stopper offers a solution for limiting or releasing window openings. Removable design allows for flexibility, Manufacturer: Netbiio