Permanent or Temporary Installation: Ideal for renters and owners, this security bar offers flexible installation options. It can be permanently installed by drilling the saddle into the door frame or temporarily mounted with doublesided tape, or simply placed in the track for added security and to prevent forced entry without damaging your home. Not a PressureMounted Bar: The saddles can either be screwed into the window frame and door profile or mounted with strong 3M doublesided tape (included) providing reliable protection, unlike the pressuremounted bars that can shake loose and fall Perfect For Window & PetDoor Installation: Install inwindow air conditioner units, pet doors, or leave the window open for ventilation, all while locking your window or door in a secure position Adjustable 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 secured