【Size】: Contains 4 rubber door stoppers, 9cm x 4cm, with height co.ukom 3mm to 90mm, which is the perfect size to protect any room door. The door stopper is made of PVC and can be reused 【Noise protection and anti-slip】: There are no more scratches on the floor and the grooved underside ensures that the door does not slip, slide or shift. The angled design and non-slip base ensure a good grip and secure the door in its correct position to prevent the door co.ukom being blown away by strong winds. 【Adjustable height】: 4 door stops can be stacked to respect the maximum distance of 56 mm. A door stopper is suitable for a minimum gap of 2 mm. The rubber door stopper is suitable for a ground clearance of 2mm to 60mm. 【Anti-slip strip】: I often encounter windy days in life, the door will close if you are not careful, and the air door will close very hard. This can be locked or stacked which is very useful 【Applicable scenarios】: Suitable for all room doors, such as children's doors,