Door Stopper Set: Includes 4 door stops, each measuring 12/4.8"(L) X 5.5/2.2"(W) X 3.2/1.3"(H), whether it is an office, home or heavy industrial door, you can also double them back to back to installunder most door seals, and the door stopper fits almost any door. Strong and flexible rubber: The floor door stopper is made of flexible natural rubber, non-toxic, not easily deformed, durable and strong. The combination of flexibility and sturdiness ensures a tight fit between thedoor wedge rubber and door gaps to hold the door firmly. Non-slip and stable: The heavy duty rubber door stopper has a unique design that provides the best friction to keep the door stable and not move. You will no longer have to worry about the open door falling.slam shut to startle a sleeping baby, or disturb you when you're working hard, let alone be slammed against the wall by the brute force of the wind. Fits Almost All Doors and Floors: The heavy duty, non-slip rubber door stop wedges are suitable for