Comfortable Height: This window lock mounts anywhere in the window profile, allowing you to install it out of the reach of childrenWindow or Sliding Door Lock: This window or sliding door security bar with a childproof anti-lift lock acts as a visual deterrent against burglars who can see it clearly through the glass. Made with a child-safe locking system to prevent unwanted openingThe sturdy mounting bar adds a visual deterrent, making would-be thieves turn back when they see it blocking the windowAdjustable and Easy to Install: Made of aluminium, this window or sliding door lock easily slides from 15.7 to 26.75 inches and can be installed on narrow patio doors and vertical or horizontal hung windows without cutting; allows the door or window to partially open while being securedNot a Pressure-Mounted Bar: The saddles can either be screwed into the window frame and profile or mounted with strong 3M double-sided tape (included) providing reliable protection, unlike the pressure-mounted bars that can shake loose and fallPerfect For Window & Pet-Door Installation: Install in-window air conditioner units, pet doors, or leave the window open for ventilation, all while locking your window or door in a secure position