Guardian Angel protects little ones from falls by adding window-based protection to your home. An ultra high quality product that keeps curious children inside and offers parents some added peace of mind, the Window Guard works easily with a range of single or double-hung windows as well as sliding and casement windows for ultimate protection in your environment. All necessary hardware is included for same day installation and use. Quick release buttons are an additional safety feature that parents will love for the forethought. Three sizes to choose from including this one. Lifetime Manufacturer Warranty.Works for large windows 58-90.