A manual door closer stores the energy used in the opening of the door in a compression or torsion spring and releases it to close the door. Some closers allow for adjustment of the strength of the spring, making it easier or more difficult to push the door open.
The Dorma 8956PH Plunger Hold Open Door Closer 10 million cycle closers represent the latest in door control technology, combining over a quarter century of proven performance with its hydraulic control system and modern architecturally styled aesthetics. Featuring full range spring power adjustment and back check, along with a narrow projection full cover and flatform style arm, the 8900 Series results in the perfect combination of durability,reliability, and appearance. Learn More$264.03