Due to the simplicity of the design, it allows you to fix the open any position, with a simple movement, folding the stopper down, thereby locking the the open position, exactly as you need. A folding door stopper, commonly known as a "goat's foot". It is used to fix the the open position. It is installed on any type of door: metal, plastic, aluminum, wooden. It is easy to install, just screw it with screws to the bottom of the door. The length of the stop allows you to use it on doors with a high threshold or with a large from the bottom of the door to the floor ., Manufacturer: Akfldms