Many consumers choose door closers mostly from the perspective of functionality, and another factor that can determine their purchase is the appearance of the door closer. High priced door closers are also common in the market, and they are widely used in commercial real estate projects, such as indoor doors in offices, conference rooms, and so on. Generally, there are three common types of top mounted door closers.
Conventional arm: Conventional arm or standard arm, closer to the pull side application, which means it is located outside the door. In these applications, there are two arms, one connected to the frame and the other connected to the spring loaded box on the pull side of the door. When closed, the arm protrudes vertically from the door, which is less attractive than other applications, but this is the most power saving option.
Top Jamb: The top door frame door closer, like a regular door closer, has a handrail that extends vertically from the door. However, the biggest difference is that the spring box is mounted on the surface of the door frame. These are typically used for aluminum or glass shop facing doors because they typically have narrow top rails. Like ordinary door closers, the top closed door closer is very energy-saving.
Parallel Arms: With parallel arm applications, when the door is closed, there are two arms located at the top of the door. They are secured to the door by a spring loaded box located on top of the push side of the door and providing power for the closing action. Parallel arm door closers are one of the most common applications, especially in commercial real estate and schools, because they reduce the risk of intentional damage to the arm, and they are more attractive than other expense options. Due to the geometry of the arm, these are less power efficient than ordinary arm and top door frame closures.