Material: The body is made of high-quality aluminum alloy, which is resistant to oxidation, corrosion, and high strength. Automatic Door Closer Heavy Duty Spring Size 2 Hydraulic Aluminum Alloy UL 3-Hour Fire Rating Surface Mounted Residential Commerical Door Closures Adjustable Speed Door Weights 88-144 Lbs High toughness 60si2mn spring is not easy to break or deform, and the piston and gear shaft have undergone high-frequency quenching treatment, with a long service life Residential areas include bathroom doors, kitchen doors, warehouse doors, garage doors, etc Two level speed regulation: The door closer is equipped with two independent rotary valves on the side. Wide applicability: The door closer can be installed from the push or pull side of the door, and the 90 ° hold open function can be freely selected according to needs. By adjusting them, you can control the closing speed of the door within the range of 180 ° -15 ° and 15 ° -0 ° to meet your specific needs. The valve should not be higher than the surface of the main body, otherwise oil leakage may occur Can be used indoors and outdoors, suitable for other public places such as schools, hospitals, office buildings, shops, hotels, etc. After millions of test cycles, it can operate normally in the temperature range of -40 ℃ to 60 ℃. Commercial Door Closer MARIE Automatic Door Closer Commercial Grade 2 Spring Heavy Duty Fireproof Adjustable Door-Closer Size 2 Hydraulic Door Closer Size 2 Door opening range: up to 180 degrees. UL Listed Heavy Duty Adjustable Hydraulic Door Closer for Fire Door... Easy to install on wooden doors, anti-theft doors, fireproof doors, metal doors, and other framed doors. Ougourim Door Closers Commercial Heavy Duty Automatic Door Closer Residential Grade 3 Spring Hydraulic Door Closer Silve Installation and after-sales service: Door closers are used for surface installation of doors and door frames.
