Strong and UsefulThe heavy duty door stopper is made of 304 stainless steel electroplating process and durable rubber the surface of the metal door stopper is very smooth waterproof and rustproof strong and durable. It is a heavy duty door stopper strong enough for any heavy door. Heavy NonslipHeavyduty door stop with rubber bottom and top nonslip texture design to protect your door and floor from bumps and wear the rubber can firmly grip the floor and door and will not move. This door stop is 3 inches 75mm high most other door stops are too short and the door can easily slide over it. Excellent Door StopperLarge door stops are suitable for any heavy commercial swing door metal door bifold door security door selfclosing hinged door and balcony door with large space underneath. The door stoppers also work well on glass doors carpet parquet or tiled floors. Easy to UseThe door stopper can automatically adjust the gap and is very suitable for commercial residential garage company public places and school. The door wedge stopper can prop up every heavy door for you to keep it open and prevent the door from being blown closed by the wind. Adjustable DesignSpringloaded design for height adjustment simply place the door stopper on the ground press it firmly with your foot and then slide it under the door to secure it. Adjustable door wedges are suitable for any commercial or home door gap. Fits any door gap from 0.5 inch to 3 inches. This large adjustable door stopper is high enough and works very well.