Features:

• Best Adjustability on the Market: Adjust the sliding door lock from 18.75 inch to 51.1 inch inch (18.75 inch to 34 inch on 2 bars, 36 inch to 51.1 inch on 3 bars) to enjoy peace of mind when you are leaving the door partially open or if you simply want additional security.
• Quick and Easy to Install: In a matter of minutes, you will enjoy a secure and reliable protection from our sliding glass door lock that is drilled into a door frame and won't loosen over time.
• Intruders Can't Get In: Heavy duty door and window security bar serve as both a physical and visual deterrent on most patio doors and windows
• Young Ones Can't Get Out: Child proof lock and height prevent kids from getting out. Height also allows for a comfortable adjustment of the sliding door lock bar.
• What's Included: Sliding Glass Door Security Bar (2 Parts), Anti Lift Lock (2 Parts; Metal Plate & White Saddle Mount), Double-Side Threaded Screw, 4X End Caps (Black, Plastic), 5X Flathead Screws, User Guide, 12 Month , & Friendly Customer Support