Door Knobs are the round types of door handles that are gripped by the user to open or close a door. Door Knobs are one of the most common types of door handles. Door Knobs can be used in various indoor and exterior doors as well as multiple building types. Door Knobs embrace different designs ranging from decorative to minimal silhouettes. Door Knobs are mostly made of metals including copper, zinc, brass, steel, and even sometimes wood or porcelain. The different types of Door Knobs include the keyed door knob, passage door knob, privacy door knob, and dummy door knob.

Are door knobs considered accessible?

Door knobs are not considered accessible as they require grasping and twisting to operate, which can be difficult for people with limited hand mobility. Lever handles are considered more accessible as they can be operated with a closed fist or by using the side of the hand, making them easier for people with disabilities to use.

What are door knobs that cannot turn called?

Door knobs that cannot turn are called Dummy knobs or Fixed knobs, they are used for doors that do not need to be locked or where a push-pull function is required such as on a closet door. They are attached to the door surface and do not have any mechanism for latching or locking.

Why are door knobs in the center of the door in the UK?

British door knobs are often placed in the center of the door because it is considered the traditional location for door knobs in the UK. This is because in older homes, door knobs were placed in the center of the door to make them easily accessible for people who were standing or sitting in a room, and also because it was a way to make the door knob symmetrical to the door itself. Additionally, this tradition was carried on from older architectural styles, such as Georgian and Victorian styles.

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Door Knobs Guides
Browse through our curated Door Knobs Guides for additional categorizations, tips, details, variations, styles, and histories of Door Knobs. Guides provide additional insights into the unique properties and shared relationships between elements.
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1.77” | 45 mm
3.86” | 98 mm
2.32” | 59 mm
1998
Blindo Offset Door Knob
4.500
9.800
5.900
1998.00
0
https://p3d.in/e/gK2Nh
GUIDE
3D
Blindo Offset Door KnobPerspective view of a 3D model of a Blindo Offset Door KnobPerspective view of a 3D model of a Blindo Offset Door Knob
1.73” | 44 mm
4.53” | 115 mm
1.85” | 47 mm
2014
Conca Offset Door Knob
4.400
11.500
4.700
2014.00
0
https://p3d.in/e/gt3VF
GUIDE
3D
Conca Offset Door KnobView of a Conca Offset Door Knob in 3D available for downloadView of a Conca Offset Door Knob in 3D available for download
1.85” | 47 mm
1.85” | 47 mm
2.48” | 63 mm
2007
Diana Door Knob
4.700
4.700
6.300
2007.00
0
https://p3d.in/e/lUnzq
GUIDE
3D
Diana Door KnobPerspective view of a 3D model of a Diana Central Door KnobPerspective view of a 3D model of a Diana Central Door Knob
2.36”, 2.76”, 3.15” | 60, 70, 80 mm (Diameter)
2.36”, 2.76”, 3.15” | 60, 70, 80 mm (Diameter)
2.48”, 2.52”, 2.68” | 63, 64, 68 mm
Edison Door Knob
8.000
8.000
6.800
0
https://p3d.in/e/GQaGY
GUIDE
3D
Edison Door KnobView of a Edison Central Door Knob in 3D available for downloadView of a Edison Central Door Knob in 3D available for download
2.6” | 66 mm (Diameter)
2.6” | 66 mm (Diameter)
2.56” | 65 mm
Gamma Door Knob
6.600
6.600
6.500
0
https://p3d.in/e/SSJJX
GUIDE
3D
Gamma Door Knob3D model of a Gamma Central Door Knob viewed in perspective3D model of a Gamma Central Door Knob viewed in perspective
2.36” | 60 mm (Diameter)
2.36” | 60 mm (Diameter)
2.24” | 57 mm
2006
Link Door Knob
6.000
6.000
5.700
2006.00
0
https://p3d.in/e/6PY4w
GUIDE
3D
Link Door KnobPerspective view of a 3D model of a Link Central Door KnobPerspective view of a 3D model of a Link Central Door Knob
2.36” | 60 mm
1.81” | 46 mm
2.56” | 65 mm
1962
Melanzana Door Knob
6.000
4.600
6.500
1962.00
0
https://p3d.in/e/x42jx
GUIDE
3D
Melanzana Door KnobPerspective view of a 3D model of a Melanzana Central Door KnobPerspective view of a 3D model of a Melanzana Central Door Knob
2.36” | 60 mm (Diameter)
2.36” | 60 mm (Diameter)
2.36” | 60 mm
Oscar Door Knob
6.000
6.000
6.000
0
https://p3d.in/e/Vpe9g
GUIDE
3D
Oscar Door KnobView of a Oscar Central Door Knob in 3D available for downloadView of a Oscar Central Door Knob in 3D available for download
1.38” | 35 mm
4.09” | 104 mm
1.73” | 44 mm
Planet Offset Door Knob
3.500
10.400
4.400
0
https://p3d.in/e/dpfUP
GUIDE
3D
Planet Offset Door Knob3D model of a Planet Offset Door Knob viewed in perspective3D model of a Planet Offset Door Knob viewed in perspective
1.38” | 35 mm
4.09” | 104 mm
1.73” | 44 mm
Planet Q Offset Door Knob
3.500
10.400
4.400
0
https://p3d.in/e/5IAht
GUIDE
3D
Planet Q Offset Door KnobPerspective view of a 3D model of a Planet Q Offset Door KnobPerspective view of a 3D model of a Planet Q Offset Door Knob
2.17” | 55 mm
2.17” | 55 mm
2.32” | 59 mm
Roger Door Knob
5.500
5.500
5.900
0
https://p3d.in/e/ZJIKH
GUIDE
3D
Roger Door Knob3D model of a Roger Central Door Knob viewed in perspective3D model of a Roger Central Door Knob viewed in perspective
1.69” | 43 mm
3.23” | 82 mm
2.83” | 72 mm
1957
Uovo Offset Door Knob
4.300
8.200
7.200
1957.00
0
https://p3d.in/e/K7ClI
GUIDE
3D
Uovo Offset Door KnobView of a Uovo Offset Door Knob in 3D available for downloadView of a Uovo Offset Door Knob in 3D available for download
Diana Central Door Knob
Style and size comparison drawing of the Diana Central Door Knob compared to other door knob designs

The first thing you will see in the Diana Central Door Knob is its square profile/parts. Then its perfect size and sharp clean lines. Hence, ideal for most doors or hands. It is available in a straight and offset version. It is made of brass.

The Diana Central Door Knob has a width of 1.85” (47 mm), height of 1.85” (47 mm), and depth of 2.48” (63 mm). The Diana Central Door Knob is paired with the square rosette.

Set of scaled dimensioned drawings of the Diana Central Door Knob viewed from the front and top without locks
The first thing you will see in the Diana Central Door Knob is its square profile/parts. Then its perfect size and sharp clean lines. Hence, ideal for most doors or hands. It is available in a straight and offset version. It is made of brass.

The Diana Central Door Knob has a width of 1.85” (47 mm), height of 1.85” (47 mm), and depth of 2.48” (63 mm). The Diana Central Door Knob is paired with the square rosette.

Set of scaled dimensioned drawings of the Diana Central Door Knob viewed from the front and top without locks
Diana Central Door Knob
Height:
1.85” | 47 mm
Width:
1.85” | 47 mm
Length:
Depth:
2.48” | 63 mm
Weight:
Area:

Rosette: Square

Materials
Brass
Designer
Studio Olivari
Year
2007

Drawings include:

Diana Central Door Knob front elevation, plan view, door views (front, plan)

Details & Downloads

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Link Central Door Knob
Style and size comparison drawing of the Link Central Door Knob compared to other door knob designs

The clean lines and gorgeous finish in the Link Central Door Knob give it a modern look. It was designed by Piero Lissoni and made of brass. This doorknob has a straightforward design with round parts/profile. The thickness of the handle ensures it gives a firm grip.

The Link Central Door Knob has a diameter of 2.36” (60 mm) and depth of 2.24” (57 mm). The Link Central Door Knob is paired with the circle rosette.

Set of scaled dimensioned drawings of the Link Central Door Knob viewed from the front and top without locks
The clean lines and gorgeous finish in the Link Central Door Knob give it a modern look. It was designed by Piero Lissoni and made of brass. This doorknob has a straightforward design with round parts/profile. The thickness of the handle ensures it gives a firm grip.

The Link Central Door Knob has a diameter of 2.36” (60 mm) and depth of 2.24” (57 mm). The Link Central Door Knob is paired with the circle rosette.

Set of scaled dimensioned drawings of the Link Central Door Knob viewed from the front and top without locks
Link Central Door Knob
Height:
2.36” | 60 mm (Diameter)
Width:
2.36” | 60 mm (Diameter)
Length:
Depth:
2.24” | 57 mm
Weight:
Area:

Rosette: Circle

Materials
Brass
Designer
Piero Lissoni
Year
2006

Drawings include:

Link Central Door Knob front elevation, plan view, door views (front, plan)

Details & Downloads

Downloads

2D Downloads

3D Downloads

Roger Central Door Knob
Comparison drawing of the Roger Central Door Knob compared to similar door knob sizes and shapes

The Roger Central Door Knob has a straightforward square profile and round parts. However, what gives it a touch of glamor and a modern twist is the smooth curve edges. This also ensures it is pleasing to touch. It is made of brass.

The Roger Central Door Knob has a width of 2.17” (55 mm), height of 2.17” (55 mm), and depth of 2.32” (59 mm). The Roger Central Door Knob is paired with the circle rosette.

Scaled set of drawings of the Roger Central Door Knob in front and top views with dimensions without locks
The Roger Central Door Knob has a straightforward square profile and round parts. However, what gives it a touch of glamor and a modern twist is the smooth curve edges. This also ensures it is pleasing to touch. It is made of brass.

The Roger Central Door Knob has a width of 2.17” (55 mm), height of 2.17” (55 mm), and depth of 2.32” (59 mm). The Roger Central Door Knob is paired with the circle rosette.

Scaled set of drawings of the Roger Central Door Knob in front and top views with dimensions without locks
Roger Central Door Knob
Height:
2.17” | 55 mm
Width:
2.17” | 55 mm
Length:
Depth:
2.32” | 59 mm
Weight:
Area:

Rosette: Circle

Materials
Bass
Designer
Studio Olivari
Year

Drawings include:

Roger Central Door Knob front elevation, plan view, door views (front, plan)

Details & Downloads

Downloads

2D Downloads

3D Downloads

Conca Offset Door Knob
Scale illustration of the Conca Offset Door Knob compared to other door knobs

The first thing you will notice in the Conca Offset Door Knob is its reduced size, clean lines, and broad flat lever. Fortunately, this gives it an expressive sculptural feel and tactile texture. It was designed by Patricia Urquiola and made of brass. You will love the softness of the lever for a pleasant touch.

The Conca Offset Door Knob has a width of 4.53” (115 mm), height of 1.73” (44 mm), and depth of 1.85” (47 mm). The rosette options to pair with the Conca Offset Door Knob include the circle, vertical oval, and horizontal oval plates.

Pair of dimensioned illustrations of the Conca Offset Door Knob seen from the top and elevation views without locks
The first thing you will notice in the Conca Offset Door Knob is its reduced size, clean lines, and broad flat lever. Fortunately, this gives it an expressive sculptural feel and tactile texture. It was designed by Patricia Urquiola and made of brass.

The Conca Offset Door Knob has a width of 4.53” (115 mm), height of 1.73” (44 mm), and depth of 1.85” (47 mm). The rosette options to pair with the Conca Offset Door Knob include the circle, vertical oval, and horizontal oval plates.

Pair of dimensioned illustrations of the Conca Offset Door Knob seen from the top and elevation views without locks
Conca Offset Door Knob
Height:
1.73” | 44 mm
Width:
4.53” | 115 mm
Length:
Depth:
1.85” | 47 mm
Weight:
Area:

Rosette: Circle, vertical oval, horizontal oval plate

Materials
Brass
Designer
Patricia Urquiola
Year
2014

Drawings include:

Conca Offset Door Knob front elevation, plan view, door views (front, plan)

Details & Downloads

Downloads

2D Downloads

3D Downloads

Gamma Central Door Knob
Comparison drawing of the Gamma Central Door Knob compared to similar door knob sizes and shapes

The Gamma Central Door Knob is a real eye-catcher. The style of the handle (round) leans more towards a modern effect. The gorgeous finish, on the other hand, makes it look expensive. It is made of nylon and has a perfect size that makes it ideal for most doors.

The Gamma Central Door Knob has a diameter of 2.6” (66 mm) and depth of 2.56” (65 mm). The Gamma Central Door Knob is paired with the circle rosette.

Scaled set of drawings of the Gamma Central Door Knob in front and top views with dimensions without locks
The Gamma Central Door Knob is a real eye-catcher. The style of the handle (round) leans more towards a modern effect. The gorgeous finish, on the other hand, makes it look expensive. It is made of nylon and has a perfect size that makes it ideal for most doors.

The Gamma Central Door Knob has a diameter of 2.6” (66 mm) and depth of 2.56” (65 mm). The Gamma Central Door Knob is paired with the circle rosette.

Scaled set of drawings of the Gamma Central Door Knob in front and top views with dimensions without locks
Gamma Central Door Knob
Height:
2.6” | 66 mm (Diameter)
Width:
2.6” | 66 mm (Diameter)
Length:
Depth:
2.56” | 65 mm
Weight:
Area:

Rosette: Circle

Materials
Nylon
Designer
Studio Olivari
Year

Drawings include:

Gamma Central Door Knob front elevation, plan view, door views (front, plan)

Details & Downloads

Downloads

2D Downloads

3D Downloads

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