This Sophia Commercial Door Closer Extra Heavy Duty DK9000 is the perfect solution for your commercial door needs. With its hydraulic auto door closing system, it ensures a safe and secure closure for your business. The door closer is suitable for commercial use and is available in a size 1-6 matte black finish. The Sophia DK9000 is a high-quality door closer that is designed to provide a reliable and durable performance. It is manufactured by the trusted brand Sophia and is ideal for use on commercial doors. This product is perfect for anyone who needs a reliable and sturdy door closer for their business.