Try using the rubber door stopper, the classic wedge doorstop. There aren't any required installations. These wedges are portable and you can use them with any door at any time. This product is designed with safety in mind: The true advantage of having a wedge doorstop is that you 't have to set up any door hardware or mechanisms to the baseboards or the wall. This one-piece doorstop slides directly under the door and keeps it open for as long as you need. There are free holder hooks in your package . Store your door stopper in the holder after use. It's easy to store and use. It works with all floor surfaces: The doorstop is made of durable premium rubber. Its surface that's going to make contact with the floor is made with a non- design. This provides a strong grip on all floor surfaces. These door stoppers can keep doors in their place. 't be moved easily by the wind or kids. The wedges are easy to use and will last for many years. Perfect size : This door stoppers work with any of doors that have a floor space between 0.1 to 1.2 inches. If your door has a space that's more than 1.2 inches high, you can stack two doorstops on top of each other. This will keep the its place without any issues. The dimensions of these door stoppers are Length 12.7cm, width 4.1cm, height 3.1cm. Colour:gray Material:rubber Package Contents: 4 * Door Stopper Rubber Door Stop Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.