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location:HomeIndustry News > How to Choose Door Closer - Door Closer Size

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How to Choose Door Closer - Door Closer Size

Number of visits: Date:2018-2-27 12:30

Door Closer Size

When speaking about closing force, we say that a door closer is of a certain size. Door closer size does not refer to actual dimensions, but to spring strength. From the practical viewpoint, door closers are available in sizes 1 to 6 – 1 being the weakest and 6 capable of exerting the strongest closing force.

1. Size #1 = 2 pounds of closing force, minimum      4.  Size #4 = 8 pounds of closing force, minimum

2. Size #2 = 3 pounds of closing force, minimum      5.  Size #5 = 11 pounds of closing force, minimum

3. Size #3 = 5 pounds of closing force, minimum      6.  Size #6 = 14 pounds of closing force, minimum

 

A size 4 closer is usually recommended for an exterior, 3-foot wide door, whereas a size 3 closer is deemed appropriate for an interior door of the same dimensions.  The assumption here is that the exterior door is more likely to be expected to close a door against a wind or negative or positive air pressure. Anyhow, the size of door closer is mainly depended on the width and weight of the door, details as follows:  

Door Closer Size

#2

#3

#4

#5

#6

Interior Door

Door Width (mm)

850

950

1100

1200

1500

Door Weight (kg)

25-45

40-65

60-85

80-120

100-150

Exterior Door

Door Width (mm)

800

850

950

1100

1200

Door Weight (kg)

15-30

25-45

40-65

60-85

80-120

 

         Adjustable Door Closer D4016                 Fixed Size #4 Door Closer D903               Concealed Door Closer D30

Depending on whether the closing force can be adjusted, door closer is divided into Adjustable Door Closer and Fixed Size Door Closer.  

Many of our most popular door closers have an adjustable Spring/Power setting. 
Example: for our door closer Model No. D4016, it is one of D4000 series listed with a Spring Size of 1-6, adjustable through the Power range of #1 (2 pounds of force) to #6 (14 pounds of force). 

 

If the door closer is non adjustable Spring/Power, meaning it is a Fixed Size, usually, there is no way to adjust the door to open or close lighter/stronger.

 

Normally the standard adjustable door closer will be set at size 3 before ex-factory.  

Depending on different mounting method, door closer can be classified into surface mounted door closer and Concealed Door Closer.

Surface mounted closers are installed on the surface of the door and frame, and are highly visible. They are the more economical for the two options and also the easiest way for installation. Concealed closers are mounted within the door and are not visible when the door is closed. They are much more expensive and difficult to be installed than surface-mounted units.

For more details, please view How to choose door closer

 

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