【Function】For families who often forget to close the sliding glass doors, they no longer need to worry about the doors being open. Our sliding door closer can help you have more time to relax and enjoy a comfortable home. 【Energy-saving】Pneumatic door closure, no need to worry about oil leakage, aluminum tube body, sturdy and durable. It can greatly reduce the energy consumption of cooling and heating. 【Adjustable sliding speed】You can adjust the closing speed to prevent injury, with two levels of adjustment. Turn the knob clockwise to reduce the speed, and turn it counterclockwise to increase the speed. 【Humanized design】Adopts pneumatic closing technology, using the resistance generated when closing the door to avoid increasing the force of opening the door. High-strength spring, with a long service life. 【Scope of Application】Applicable to sliding patio doors with a width of 2.5 to 4.2 feet (about 0.75 to 1.3 meters), and a weight not exceeding 80 kilograms/176 pounds, including frameless glass doors, wooden doors, etc., Manufacturer: LYSDIANPU