Deluxe Door Guard
This sturdy steel rod fits under any doorknob. The skid-resistant rubber base securely grips the floor to anchor the door shut. It works on any floor surface - wood, carpeting, vinyl, tile, etc. Even if an intruder picks the lock, the door will remain tightly closed. Fits in a suitcase so you can feel secure when you travel. Adjusts from 26" to 41"H.