Heavy Duty Rubber Door Stop: The door stop is made of high quality durable rubber and wedge shape design, keep doors firmly open and prevent children or pets from slamming the door and accidentally locking themselves in a room. Suitable for most floors: corrugated and flat surface, high strength and firm adhesion to tiles, concrete, wooden floor, leaves no marks on tiles and floor, no noise, no scratches on door and floor. For different gaps: 1 door stop fits the gap between door and floor from 5mm to 30mm. If the space is too large, you can stack two. Under your door before ordering to make sure our stopper fits. Size: Length: 98mm, Width: 50mm, Height: 30mm. Easy to store: the door stop does not take up much space and can be hung up when you don't need it. It works well on all floors in homes, offices and centers.