It has a heat-treated piston and a powder-coated body for improved durability. Adjust the closing speed to meet your needs. American Style ANSI Grade 1 Heavy Duty Automatic Fire Commercial Door... It prevents door slams, resulting in a quieter, more pleasant environment. This compact hydraulic door closer is suitable for both commercial and residential use, with adjustable speed settings to provide smooth, gentle door closure without slamming. Auto pneumatic aluminum alloy door cloer The Onarway Door Closer Size 3 is a commercial-grade hydraulic door closer designed for medium-weight doors (45-60kg) with widths between 60-120cm. Made from durable aluminum alloy, it offers adjustable closing speed, quiet operation, and complies with EN1154 certification for safety and reliability ✅ COMMERCIAL USAGE - This door closer has a maximum door opening angle of 180°, making it suitable for both indoor and outdoor use. ✅ HIGH QUALITY MATERIAL - The hydraulic door closer is made of robust aluminum alloy and has a carbon steel arm for greater strength. ✅ EASY INSTALLATION - Install the door closer in either the left or right position on any standard door frame and jamb material. Door Closer Adjustable Spring Hydraulic Aluminum Alloy Closure For Residential And Light Commercial Door Pd550829748 Hydraulically Regulated Door Closers Each package includes all of the hardware required for installation with normal arm mounting.