Sliding Door Security Bar-Child Proof Sliding Door Lock Bar with Anti Lift Lock - Fits Most Doors & Windows - Adjustable Patio Door Security Bar (18.75"- 51.1") - White

Superior Adjustability Available: Adjust the sliding door lock from 18.75 to 51.1 ( 18.75 to 34 with 2 bars, 36 to 51.1 with 3 bars) to achieve peace of mind when leaving the door slightly open or for enhanced security.
Fast and Simple Installation: In just minutes, benefit from secure and dependable protection with this sliding glass door lock that gets drilled into a door frame and remains firm over time.
Intruders Are Kept Out: This robust door and window security bar provides both a physical and visual deterrent for many patio doors and windows.
Children Stay Safe Inside: The child-resistant lock and height stop kids from exiting. The height also enables convenient adjustment of the sliding door lock bar.
Package Contents: 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