About this item Two in One Door Stopper Security Bar & Sliding Door Lock Bar: Use this device for two different purposes with easily interchangeable caps for hinged doors and sliding door/window Door Stoppers Security Bar: Angled rubber bottom assures full contact and a strong brace on all types of floors without scratching them as well as all door knob types including french doors Adjustable and Durable: Bar can be adjusted between 18.25" to 46.50" and constructed of high grade iron to withstand 400 pounds of pressure *please note: the sliding door caps decrease the maximum length to 46.50" Easy to Use: Easily props under door knob and easy to remove. Security burglar bar can also be easily adjusted What You'll Receive: Your satisfaction is our top priority so, along with our door security bar, we also included easy to reach customer service as well as 2 years of warrenty. › See more product details