Door closers are mainly used in commercial and public buildings, but they are also used in homes. They have many uses, the primary of which is to make the door close on its own to limit the spread of fire and ventilation in the building.
The number of openings and quality of door closers are not comparable between American Standard, European Standard and National Standard due to different testing methods. Select door closers are available according to different standards to choose the right kind for you.
1) high-grade American standard door closers: to reach 2 million times open life test. Meet the U.S. ANSI156 level one requirements. With adjustable strength function. Suitable for high security, high frequency of use of public buildings, engineering and maintenance doors with heavy-duty high-strength door control system.
2) Mid-range American standard door closers: non-fire door closers to achieve 1 million times open life test. With adjustable strength function. Suitable for high security, high frequency of use of high-strength residential doors and medium strength commercial doors door control system.
American Standard High Grade Door Closers: