The actual door leaf width required to ensure the correct 'Effective Clear Width' as identified in Table 2 and
Diagram 9 of Approved Document M 2004 and Figure 14 and table 2 of BS8300 will depend on the combination of several variables for reference:

• Door thickness
• Frame stop size
• Hinge throw (based on the pivot point of the door)
• Face fixed items on the closing face (E.g. Lever handle, pull handle,weatherboard, etc)

The following calculator enables you to calculate the effective clear width, frame and structural opening for single leaf doorsets and double leaf doorsets, with the door open at 90°, simply by altering the values in each of the boxes, with the associated drop-down tables identifying the standard Leaderflush Shapland options.

Please note where door is able to open beyond 90°, generally as little 93°, the handle can be disregarded when calculating the effective clear width.

Should you require any further details please do not hesitate to contact the Technical Services Department on:
01773 530500

Single Leaf Situations

Leaf to Effective Clear Width

 Door width

 Door thickness

44mm
54mm
Audiodor Super 47mm
Armador 57mm
Leadline 57mm', CAPTION, 'Door Thickness',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Frame rebate

12mm (standard rebate)
14mm Standard planted stop
18mm Plasform
18mm Audiodor
25mm Security and Radiation', CAPTION, 'Frame rebate',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Hinge knuckle

LS ref

BS7532

BS EN 1935

H101

Class 8

Class 11

H102

Class 9

Class 13

H105

Class 8

Class 11

H125

Class 9

Class 13
H101 = 11mm
H102 = 11mm
H105 = 13mm
H125 = 13mm', CAPTION, 'Hinge knuckle',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Handle projection (where relevant)

Dimension from face of door to extreme edge of handle (refer to ironmongery supplier)', CAPTION, 'Handle projection',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Effective clear width

Effective Clear Width to Leaf

 Effective clear width

 Frame thickness

Excluding stop
Generally 32mm for standard frames
44mm for Security,
Radiation and high level acoustic ', CAPTION, 'Frame thickness',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Door thickness

44mm
54mm
Audiodor Super 47mm
Armador 57mm
Leadline 57mm', CAPTION, 'Door thickness',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Frame rebate

12mm (standard rebate)
14mm Standard planted stop
18mm Plasform
18mm Audiodor
25mm Security and Radiation', CAPTION, 'Frame rebate',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Hinge knuckle

LS ref

BS7532

BS EN 1935

H101

Class 8

Class 11

H102

Class 9

Class 13

H105

Class 8

Class 11

H125

Class 9

Class 13
H101 = 11mm
H102 = 11mm
H105 = 13mm
H125 = 13mm', CAPTION, 'Hinge knuckle',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Handle projection (where relevant)

Dimension from face of door to extreme edge of handle (refer to ironmongery supplier)', CAPTION, 'Handle projection',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Minimum door width

 Structural opening

Paired Leaf Situation - One Leaf Open

Leaf to Effective Clear Width

 Primary leaf width

 Door thickness

44mm
54mm
Audiodor Super 47mm
Armador 57mm
Leadline 57mm', CAPTION, 'Door thickness', STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Hinge knuckle

LS ref

BS7532

BS EN 1935

H101

Class 8

Class 11

H102

Class 9

Class 13

H105

Class 8

Class 11

H125

Class 9

Class 13
H101 = 11mm
H102 = 11mm
H105 = 13mm
H125 = 13mm', CAPTION, 'Hinge knuckle',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Handle projection (where relevant)

Dimension from face of door to extreme edge of handle (refer to ironmongery supplier)', CAPTION, 'Handle projection',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Effective clear width

Effective Clear Width to Leaf

 Effective clear width

 Door thickness

44mm
54mm
Audiodor Super 47mm
Armador 57mm
Leadline 57mm', CAPTION, 'Door thickness',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Hinge knuckle

LS ref

BS7532

BS EN 1935

H101

Class 8

Class 11

H102

Class 9

Class 13

H105

Class 8

Class 11

H125

Class 9

Class 13
H101 = 11mm
H102 = 11mm
H105 = 13mm
H125 = 13mm', CAPTION, 'Hinge knuckle ',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Handle projection (where relevant)

Dimension from face of door to extreme edge of handle (refer to ironmongery supplier)', CAPTION, 'Handle projection',STICKY, LEFT, CELLPAD, 5, SNAPX, 10, SNAPY, 1, CLOSECLICK);">

 Minimum primary door width

Recalculate automatically