Door Closers USA manufactures high quality commercial grade door closers. Our products robust design make them an ideal solution to any commercial door. If you are in the market for a new door closer let us help you find the right one.
Types of Door Closers When it comes to surface mounted door closers, they can be categorized by two types: adjustable spring and fixed spring. Each door closer body contains a closing spring. When the door opens the cam inside the closer body compresses the spring, creating potential energy. When the door is released by the pedestrian, the spring inside of the closer pulls the door closed. A fixed spring door closer is a closer which has a spring that can be used for one size of door. The most common fixed spring closers are size 4 since they can be used on exterior 36" doors. An adjustable spring closer is the most popular closer. This closer spring can be adjusted to fit any size door.