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Parallel and Standard Arm Closers

The two most popular ways to mount the door closer are either standard (regular) arm or parallel (pa) arm. The standard arm closer mounts on the pull side of the door so it will never be used on exterior outswing doors. It has a better power efficiency than the pa arm but the arm projects out from the door.

standard arm commercial door closer

The parallel arm closer mounts on the push side of the door. While it is not quite as strong as the standard arm mount, it is still plenty good enough for almost all applications and it looks better as the arm lays parallel with the door in the closed position.

parallel arm mount

Most commercial door closers come with the proper mounting brackets to install it as a standard or pa mount. There are many variations on this such as top jamb mount, concealed closers, floor closers, etc., but these two are used the most.


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