Geepas Automatic door closer is made of high-quality material with the hydraulic principle. It keeps your door closed so you don't need to worry your children or colleagues and other people forget to close any door, it will protect your door from damage by slapping and slamming hard by wind and hands at the same time. The hydraulic design makes no noise and stable enough.Double adjustable valves help you control the speed of closing and latching doors to protect your door lock. It's applicable to all doors that are within 1100 mm width and 65-85kg weight. It's an excellent choice for warehouse door, fire door, gate, office door, etc. and all kinds of different material doors.This door closer does not keep the door stay open, it helps to close the door without push or pull. It is not the speed control product of the opening door but the closing door. Please be aware that installing a door closer to a light door may cause an open-door labour some problem, House with children (aged under 6) and physically weak people please take this under consideration.SAFE - This Geepas Door Closure is made up of Anti-oxidative, anticorrosive, rust less, steady, abrasion-resistant, and weatherproof material which work hydraulic, quiet and safe closer, with speed adjustable screws. It is leak proof body will not let oil to make black marks on the door. Gently keep the door open without using external force or additional door wedges to keep the door open, protecting your door and lock and prolonging the service life.CREATE QUIET ENVIRONMENT - Hydraulic door closer is made of high standard aluminum alloy. It can automatically and quietly close your door. Will improve your quality of life. You don't have to yell "shut the door" nearly as much anymore. It has a closer has an advanced buffer function to avoid the noise caused by vigorously closing the door and strong wind.