HEAVY-DUTY SECURITY: Crafted from 20-gauge heavy-duty steel, this security door bar and door jammer fits on hinged, patio, and sliding doors VERSATILE PROTECTION: This security stick for door adjusts between 25" to 43" to fit a variety of doors, such as apartment door security, home security products, and dorm room use EASY INSTALLATION: This portable door jammer sets up without tools by propping under door knobs, levers or between sliding doors, providing front door security DESIGNED TO PROTECT FLOORS: Features a non-marring top yoke and a pivoting padded foot to protect floors while providing door stick security with these door security devices TRAVEL-FRIENDLY: Compact and portable, this security bar for your sliding glass door or dorm room can be taken on the go and used for travel.