Hardware Door Close, Hydraulic Spring Door Closer Automatic Door Closer High-Quality Materials: The metal fire rated door closer is made of commercial-grade aluminum alloy, anti-oxidation, anti-corrosion, not easy to rust, strong and wear-resistantAdjustable Door Closing Speed: The overhead door closer is hydraulically operated, fully automatic closing, and the door closing speed is adjustable to protect your door and lock and ensure your safe lifeProduct Parameters: The adjustable rated door closing has a door width of within 900 mm, suitable for doors weighing between 25-45kg, not suitable for light doorsScope of Application: The door closer is suitable for all kinds of medium-sized doors, left and right doors, metal doors, fire doors, wooden doors, framed glass doors, home and office doors, indoor and outdoor doorsEasy to Install: The installation steps of the spring buffer door closer are very simple, you can contact us at any time if you have any questions during the installation processColor: silverSize: as shownQuantity: 1pcKind tips:1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering.2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding.3. Only the above package contents, excluding other products.