Door Closer Commercial Heavy Duty DK4000 Automatic Hydraulic Door Hinge Closer for High Traffic Areas, Matte Black

The automatic door closer is engineered for high-traffic commercial and residential applications, including interior and exterior doors in department stores, aluminum storefronts, factories, schools, restaurants, and offices. This hydraulic door closer is adjustable across a range of sizes and accommodates doors weighing up to 150kg (330 lbs) with widths from 800-1500mm (31-60 inches). It is a non-handed unit suitable for both left and right-handed doors and performs reliably under extreme temperatures. Constructed with high-quality materials, the door closer features a satin chrome-plated precision cast aluminum body and a forged steel arm. Its heat-treated pistons and powder-coated body offer superior protection and corrosion resistance, even in demanding environments. The unit includes three adjustable valves for controlling closing speed, latching speed, and backcheck, ensuring secure latching with quiet operation. This commercial door closer system is designed for industrial and commercial use. It is UL228-listed, ANSI/BHMA A156.4 certified, and carries a UL-certified three-hour fire rating. Meeting ANSI Grade 1 standards, it is rated for over 2,000,000 cycles, making it suitable for high-traffic applications. The model also complies with accessible design standards. The hydraulic automatic door closer provides consistent and secure door closure, preventing slamming while ensuring smooth operation. It can be installed in either a left or right configuration on various door frames and jambs, and is compatible with wood, aluminum, and steel doors. Each unit comes complete with all necessary hardware, installation templates, and a detailed guide, including brackets and a soffit plate. It supports three mounting options: regular arm mounting, top jamb mounting, and parallel arm mounting.