There are two kinds of door closers and they are the manual and the automatic types. The overhead and the jamb mounted are the styles of the manual shutters. There are also certain factors to consider when choosing these shutters like their resistance against any risk of vandalism or other opening forces and their function in emergency cases.

Usually, the manual door closers are opened and closed by a person like a security guard. They can also be shut by using hydraulic dampers which limits the speed of opening and closing of the door. These shutters likewise function mechanically like the oil-filled shutters. The function of these devices are both closing and opening of doors.

The door closers are automatic when they open with the use of controls like push button, motion detector, or a proximity detector which shuts or opens the door when it is safe to close or to open. These dual functions are actually suited for the entrances and exits where people get in and out periodically. These types of shutters are also considered openers for they can open automatically.

These are applicable to places like hospitals or buildings which fly open especially in case of fire or other calamities. The ingresses and egresses of these particular places must have automatic door closers and openers. These door closers are really important most particularly in office and big buildings.

They can be mounted by standard installation, top jamb installation or parallel arm mounting to the door to suit your style. They are mostly made of metals like stainless steel, brass and iron and their prices vary according to their respective features. The finish, models, designs and sizes as well affect the prize. The common available finishes are silver, brass, chrome, satin chrome and other colors of your choice for door closers.