Triple The Protection - Unlike basic locks, our sliding glass door lock requires a 3-factor mechanism to unlock. This pack of sliding window locks offers an extra layer of security thats tough for little hands to figure out. Two-Button Defense - With a dual-button unlock system and a push-down panel, this glass sliding door lock offers a smarter solution to keep sliding doors and windows securely closed. Easy Installation, Maximum Security - Secure your home in minutes with our sliding window locks. Built with strong adhesive for a durable, reliable hold across patio doors, windows, and closets. Kid-Proof Sliding Window Locks - Our sliding glass door security lock has a robust grip and multi-step unlock process, creating a nearly impenetrable barrier for children. Universally Fitted Slide Door Security - Designed to work on a wide variety of surfaces, from sliding glass doors to horizontal and vertical windows, our 2 pack sliding door child lock offers versatile security for any home.