Keep the door open between 90 and 180 degrees If your door opens beyond 90 degrees, this door closer can hold it open at any angle between 90 and 180 degrees. No need for door stops or external aids to keep the door open. Ideal for well-ventilated spaces or areas with frequent movement of items. Simply pull the door less than 90 degrees to allow it to automatically close.High quality and adjustable speed The hydraulic door closer is constructed from durable aluminum alloy. It ensures quiet and smooth automatic door closure, enhancing convenience and comfort. Features two independent valves to adjust closing and latching speed, allowing precise control over door operation.Easy installation standards Comes with a detailed installation manual and access to an installation video for straightforward setup. This door closer is CE, UL, and 3C certified, fire tested, and manufactured in compliance with EU production standards.Wide application Size 2 door closer is designed for doors weighing 2545 kg (5599 lbs) and up to 850 mm (33.5 inches) wide. Suitable for both left and right-handed doors, including wood, metal, residential, commercial, interior, exterior, and fire-rated doors. Ideal for use in homes, apartments, hotels, condominiums, office buildings, and warehouses.Warranty Backed by a 3-year warranty. Tested for over 500,000 cycles, ensuring long-term reliability and performance.