Home Safety: The outward window lock helps to limit the opening width and helps keep your children safe and prevents them from getting their fingers caught or falling. Perfect for Multi-Story Homes and Apartments: Window security is one of the most important parts of child safety, especially if you live in a high-rise building Easy to Install: Our window latches are a great addition to your home safety list and are easy to install with the included installation template and screws. Fits Most External Windows: The external latch can be easily mounted on most outward opening windows, including wooden frames Adjustable Opening Width: Our inward window locks can be adjusted from 0 to 100mm, there are several stops between 0 to 100mm so you can adjust according to the width desired. Product color: white Delivery quantity: One piece