Automatic Hydraulic Door Closer with Stop Device, Adjustable Spring Door Closer, Closed Buffer Commercial and Residential Use 20-40 kg Door（Black）

General Description This automatic hydraulic door closer is designed to hold your doors open at an angle of 90° to 180° without requiring external force. Ideal for spaces requiring good ventilation or for the frequent passage of goods, it closes automatically when the door is pulled less than 90°. Made of high-quality aluminum alloy, it offers a silent and adjustable closure, improving your daily comfort. Technical specifications Door weight: 20 to 40 kg Door width: 750 to 850 mm Material: Aluminum alloy Valves: 2 valves to independently control closing and locking speed Installation The door closer is supplied with a detailed installation manual and installation video for quick and easy setup.Application This door closer is suitable for right and left opening doors, whether wood or metal, and is suitable for residential and commercial applications, including fire doors. Other information The product has passed CE, UL, 3C certification and fire test, ensuring its compliance with safety standards.