Window limiter safety locks are designed to limit the opening distance of doors and windows to reduce the risk of injury from falls. Also allows fresh air to enter. Suitable for most wooden, PVC and aluminum hinges, casements and sliding windows (horizontal or vertical). - ? - Often open and close windows/doors without adult supervision to prevent baby from pinching fingers; Prevent babies/toddlers from accidentally falling out of windows or doors. It works not only for babies, but also for pets. - with our window limiter, you can choose between two different window opening sizes: 13 cm (5.12 in) and 16 cm (6.30 in). You can adjust the width of the door seams to the size of your pet according to your actual needs. Just switch the round button to adjust the door spacing at will - These window end locks are equipped with a strong adhesive that can be firmly fixed without perforation. All you need to do is remove the protective film of the lock and stick it directly on the window or door (it will work better after 24 hours). At the same time, it is easy to remove with a hair dryer and does not damage the window surface. - - You will receive 2 white window limit locks for children / pets. material: plastic Quantity issued: 2