ISO 22496:2021

Windows and pedestrian doors — Vocabulary

This document specifies general terminology for windows and pedestrian doors.

Fenêtres et portes piétonnes — Vocabulaire

General Information

• Status: Published
• Publication Date: 05-Oct-2021
• ICS: 01.040.91 - Construction materials and building (Vocabularies)
• ICS: 91.060.50 - Doors and windows
• Technical Committee: ISO/TC 162 - Doors, windows and curtain walling
• Drafting Committee: ISO/TC 162/WG 3 - Terminology
• Current Stage: 6060 - International Standard published
• Start Date: 06-Oct-2021
• Due Date: 23-Jan-2021
• Completion Date: 06-Oct-2021

Relations

• Revises: ISO 1804:1972 - Doors — Terminology
• Effective Date: 23-Apr-2020

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 22496
First edition
2021-10
Windows and pedestrian doors —
Vocabulary
Fenêtres et portes piétonnes — Vocabulaire
Reference number
ISO 22496:2021(E)
© ISO 2021

---------------------- Page: 1 ----------------------
ISO 22496:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2021 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 22496:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Terms related to windows. 2
3.2 Terminology for pedestrian doors . 10
Annex A (informative) Figures for windows .20
Annex B (informative) Figures for pedestrian doors .37
Bibliography .42
iii
© ISO 2021 – All rights reserved

---------------------- Page: 3 ----------------------
ISO 22496:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 162, Doors, windows and curtain walling.
This first edition cancels and replaces the first edition of ISO 1804:1972, which has been technically
revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
  © ISO 2021 – All rights reserved

---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 22496:2021(E)
Windows and pedestrian doors — Vocabulary
1 Scope
This document specifies general terminology for windows and pedestrian doors.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
1
© ISO 2021 – All rights reserved

---------------------- Page: 5 ----------------------
ISO 22496:2021(E)
3.1 Terms related to windows
Key
1 sash
2 glazing bar
3 fixed window
4 mullion
5 head
6 frame
7 fixed light
8 jamb
9 transom
10 casement
11 glazing bead
12 sill
13 top rail
Figure 1 — Overview window component
Note 1 to entry: See Annex A for opening functions of windows.
3.1.1
active sash or active casement
sash/casement of a multi-light window, intended to be moved first to provide opening
Note 1 to entry: See Figure 2.
2
  © ISO 2021 – All rights reserved

---------------------- Page: 6 ----------------------
ISO 22496:2021(E)
Key
1 passive casement
2 active casement
Figure 2 — Active sash or active casement
3.1.2
bottom rail
horizontal component at the bottom of a sash/casement
3.1.3
bonded glazing
type of window where the glass is primarily retained by a perimeter sealant and maybe with a
supplementary mechanical restraint
3.1.4
casement
opening element of a hinged or pivoted window
Note 1 to entry: See also Annex A for opening functions of windows.
Note 2 to entry: See Figure 1 and Figure 9.
3.1.5
casement window
building component for closing an opening in a wall or roof with a hinged or pivoted opening element
that may admit light and/or provide ventilation
3.1.6
closed
state where the movable parts rest in or at the fixed part in a way in which they may be fastened
(latched and/or locked)
3.1.7
coupled window
window where casements in at least two levels are operated by one action, but can be disconnected for
specific purposes such as maintenance or cleaning
Note 1 to entry: See Figure 3.
Figure 3 — Coupled window
3
© ISO 2021 – All rights reserved

---------------------- Page: 7 ----------------------
ISO 22496:2021(E)
3.1.8
daylight opening width/height
any area in the building envelope that is capable of admitting daylight to an interior
3.1.9
direct glazing
glazing sealed to a casement frame which, when the casement is closed, is linearly mounted on at least
two edges
Note 1 to entry: See A.3.
3.1.10
direction of rotation
movement of a hinged or pivoted casement window around its fixing, either clockwise or counter-
clockwise
Note 1 to entry: See Figure 4.
Key
1 direction of rotation – counter-clockwise
2 direction of rotation – clockwise
Figure 4 — Direction of rotation
3.1.11
door height window
french window
casement door
window which extends to floor level and allows access or passage for persons
3.1.12
double window
window with casements in at least two layers that operate independently
Note 1 to entry: See Figure 5.
Figure 5 — Double window
4
  © ISO 2021 – All rights reserved

---------------------- Page: 8 ----------------------
ISO 22496:2021(E)
3.1.13
fanlight
infill panel of glass or translucent material fitted within a window frame, above the moving sash(es)/
casement(s) and with a solid member (transom) between it and the moving part(s)
Note 1 to entry: See Figure 6.
Key
1 fanlight
Figure 6 — Fanlight
3.1.14
fastened
state where the movable part is restrained at one or more points
3.1.15
fixed light
window with infill fitted directly into the frame
Note 1 to entry: In some countries the term fixed light is used for fixed window.
Note 2 to entry: See Figure 1 and Figure A.1 a).
3.1.16
fixed window
window with infill mounted in a sash or casement construction but which differs from an openable
window only in that the hardware used does not permit the sash/casement to be opened on a regular
basis but holds the sash/casement to the frame
Note 1 to entry: A fixed window contains all the gaskets that an openable window does and these can be replaced
by dismantling the sash or casement from the frame.
Note 2 to entry: See Figure 1 and Figure A.1 b).
3.1.17
frame
component forming the perimeter of a window, enabling it to be fixed to the building structure
Note 1 to entry: See Figure 1 and Figure 7 and Figure 9.
5
© ISO 2021 – All rights reserved

---------------------- Page: 9 ----------------------
ISO 22496:2021(E)
Key
1 frame
2 casement or sash
Figure 7 — Frame
3.1.18
glazing
transparent or translucent infill, together with all the components required to hold it within a frame
3.1.19
glazing bar
member subdividing the glazed area into smaller panes, either physically (Georgian bar) or visually
(cross- or attached bar)
Note 1 to entry: See A.2 for different types of glazing bar.
Note 2 to entry: See Figure 2.
3.1.20
glazing bead
section retaining infill within its frame
Note 1 to entry: Term “glazing stop” is also used in some countries when the infill is glass.
Note 2 to entry: See Figure 1.
3.1.21
head
top horizontal member of a window frame
Note 1 to entry: See Figure 1.
3.1.22
infill
panel of transparent or opaque material or combination of materials
3.1.23
interlocking stile
stile that is one of a pair of stiles that are designed to engage with each other in the closed position for
sliding products
3.1.24
jamb
vertical side member of a window frame
Note 1 to entry: See Figure 1.
6
  © ISO 2021 – All rights reserved

---------------------- Page: 10 ----------------------
ISO 22496:2021(E)
3.1.25
latched
movable part is returned to its closed position and restrained by either a) a self-engaging fastener or b)
a roller catch or c) a latch
Note 1 to entry: Latched is one of the fastened closing conditions (see 3.1.14).
3.1.26
locked
movable part is further restrained in the closed position by additional operations (of e.g. handle, key,
automatic devices or electronic devices) to engage integrated locking devices (e.g. nutbolts or deadbolts)
which will affect the product’s characteristics
Note 1 to entry: Locked is one of the fastened closing conditions (see 3.1.14).
3.1.27
mullion
vertical or inclined component which subdivides a frame into sashes/casements or connects two frames
Note 1 to entry: See Figure 1.
3.1.28
passive sash
passive casement
sash/casement of a multi-light window, intend to be moved after the active sash/casement
Note 1 to entry: See Figure 2.
3.1.29
pivot window
window that opens by pivoting either horizontally or vertically
Note 1 to entry: See A.1.2 for different types of pivot window.
3.1.30
rebate
recess in a frame, into which a moving element fits
Note 1 to entry: See Figure 8.
Key
1 rebate “R”
2 rebate “r”
3 wall
Figure 8 — Rebate
7
© ISO 2021 – All rights reserved

---------------------- Page: 11 ----------------------
ISO 22496:2021(E)
Note 2 to entry: A rebate has two measurements, “r” the width of the rebate measured in the same plane as the
width of the casement and “R” the depth of the rebate measured in the same plane as the thickness of the moving
element.
Note 3 to entry: See B.2 for examples of different types of rebate.
3.1.31
ribbon window
two or more windows which are attached to each other (either horizontally or vertically) without
supporting structure between them
3.1.32
roof window
skylight
window intended for installation in a roof. Roof windows/ Skylights have the same characteristics as
windows installed in walls with regard to function, cleaning, maintenance and durability
3.1.33
sash
opening element of a sliding window
Note 1 to entry: See Figure 1 and Figure 7.
3.1.34
screen
assembly of two or more windows and/or doorsets in one plane, with or without separate frames
3.1.35
secured
any action(s) which prevent unauthorised release of the fastening device(s) to allow exit or entry (e.g.
child safety, burglary)
3.1.36
sill
bottom member of a window frame
Note 1 to entry: See Figure 1.
3.1.37
single window
window with casement or sash in only one layer
Note 1 to entry: See Figure 9.
Key
1 sash/casement
2 frame
Figure 9 — Single window
8
  © ISO 2021 – All rights reserved

---------------------- Page: 12 ----------------------
ISO 22496:2021(E)
3.1.38
sliding window
window with one or more sashes where at least one slides either horizontally or vertically
3.1.39
stile
vertical edge member of a sash/casement
3.1.40
top rail
uppermost horizontal member of a sash/casement
Note 1 to entry: See Figure 1.
3.1.41
transom
horizontal component which subdivides a frame into sashes/casements or fixed lights
Note 1 to entry: See Figure 1.
3.1.42
window
building component or multiple components for closing an opening in a wall or roof that may admit
light and/or provide ventilation
Note 1 to entry: See Figure 1.
9
© ISO 2021 – All rights reserved

---------------------- Page: 13 ----------------------
ISO 22496:2021(E)
3.2 Terminology for pedestrian doors
Key
1 frame
2 head
3 overpanel
4 transom
5 top or head rail
6 jamb
7 glazed panel
8 flat panel
9 stile
10 midrail
11 muntin
12 bottom rail
13 threshold
Figure 10 — Overview door component
Note 1 to entry: Terminology for doors also covers terminology used for inspection hatches.
Note 2 to entry: See B.1 for cross-sections and opening functions of doors.
10
  © ISO 2021 – All rights reserved

---------------------- Page: 14 ----------------------
ISO 22496:2021(E)
3.2.1
active leaf
leaf of a multi-leaved hinged or pivoted doorset, intended to be moved first to provide opening
Note 1 to entry: See Figure 11.
Key
1 passive leaf
2 active leaf
Figure 11 — Active leaf
3.2.2
astragal
small moulding attached to one opening stile of a pair of doors which, when the doors are closed, cover
the clearance gap
Note 1 to entry: See Figure 16.
3.2.3
bottom rail
horizontal component at the bottom of a door leaf construction
Note 1 to entry: See Figure 10.
3.2.4
clear opening height
minimum clear height of the door opening, which allows unrestricted passage through the open
doorway
Note 1 to entry: See Figure 12.
Key
1 clear opening height
Figure 12 — Clear opening height
11
© ISO 2021 – All rights reserved

---------------------- Page: 15 ----------------------
ISO 22496:2021(E)
3.2.5
closed
movable parts rest in or at the fixed parts in a way in which they may be fastened (latched and/or
locked)
3.2.6
closing face
face of a door leaf which is the first to move into the closed position
Note 1 to entry: See Figure 13.
Key
1 opening face
2 closing face
3 reveal
Figure 13 — Closing face
3.2.7
direction of rotation
movement of a hinged or pivoted door leaf around its fixing, either clockwise or counter-clockwise
Note 1 to entry: See Figure 14.

a
Direction of rotation – clockwise.
b
Direction of rotation – counter-clockwise.
Figure 14 — Direction of rotation
3.2.8
doorset
door
building component which is designed and used to close a permanent opening in separating elements
and supplied complete with all essential parts from a single source, and for which the main intended
use is the access of pedestrians
12
  © ISO 2021 – All rights reserved

---------------------- Page: 16 ----------------------
ISO 22496:2021(E)
3.2.9
door assembly
building component consisting of a frame and one or more leaves, together
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 22496
ISO/TC 162
Windows and pedestrian doors —
Secretariat: JISC
Vocabulary
Voting begins on:
2021­07­07
Fenêtres et portes piétonnes — Vocabulaire
Voting terminates on:
2021­09­01
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 22496:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2021

---------------------- Page: 1 ----------------------
ISO/FDIS 22496:2021(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH­1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 22496:2021(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Terms related to windows. 2
3.2 Terminology for pedestrian doors .10
Annex A (informative) Figures for windows .20
Annex B (informative) Figures for pedestrian doors .37
Bibliography .43
© ISO 2021 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO/FDIS 22496:2021(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non­governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 162, Doors, windows and curtain walling.
This first edition cancels and replaces the first edition of ISO 1804:1972, which has been technically
revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

---------------------- Page: 4 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 22496:2021(E)
Windows and pedestrian doors — Vocabulary
1 Scope
This document specifies general terminology for windows and pedestrian doors.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
© ISO 2021 – All rights reserved 1

---------------------- Page: 5 ----------------------
ISO/FDIS 22496:2021(E)

3.1 Terms related to windows
Key
1 sash
2 glazing bar
3 fixed window
4 mullion
5 head
6 frame
7 fixed light
8 jamb
9 transom
10 casement
11 glazing bead
12 sill
13 top rail
Figure 1 — Overview window component
Note 1 to entry See Annex A for opening functions of windows.
3.1.1
active sash or active casement
sash/casement of a multi‐light window, intended to be moved first to provide opening
Note 1 to entry: See Figure 2.
2 © ISO 2021 – All rights reserved

---------------------- Page: 6 ----------------------
ISO/FDIS 22496:2021(E)

Key
1 passive casement
2 active casement
Figure 2 — Active sash or active casement
3.1.2
bottom rail
horizontal component at the bottom of a sash/casement
3.1.3
bonded glazing
type of window where the glass is primarily retained by a perimeter sealant and maybe with a
supplementary mechanical restraint
3.1.4
casement
opening element of a hinged or pivoted window
Note 1 to entry: See also Annex A for opening functions of windows.
Note 2 to entry: See Figure 1 and Figure 9.
3.1.5
casement window
building component for closing an opening in a wall or roof with a hinged or pivoted opening element
that may admit light and/or provide ventilation
3.1.6
closed
state where the movable parts rest in or at the fixed part in a way in which they may be fastened
(latched and/or locked)
3.1.7
coupled window
window where casements in at least two levels are operated by one action, but can be disconnected for
specific purposes such as maintenance or cleaning
Note 1 to entry: See Figure 3.
Figure 3 — Coupled window
© ISO 2021 – All rights reserved 3

---------------------- Page: 7 ----------------------
ISO/FDIS 22496:2021(E)

3.1.8
daylight opening width/height
any area in the building envelope that is capable of admitting daylight to an interior
3.1.9
direct glazing
glazing sealed to a casement frame which, when the casement is closed, is linearly mounted on at least
two edges
Note 1 to entry: See A.3.
3.1.10
direction of rotation
movement of a hinged or pivoted casement window around its fixing, either clockwise or counter‐
clockwise
Note 1 to entry: See Figure 4.
Key
1 direction of rotation – counter­clockwise
2 direction of rotation – clockwise
Figure 4 — Direction of rotation
3.1.11
door height window
french window
casement door
window which extends to floor level and allows access or passage for persons
3.1.12
double window
window with casements in at least two layers that operate independently
Note 1 to entry: See Figure 5.
Figure 5 — Double window
4 © ISO 2021 – All rights reserved

---------------------- Page: 8 ----------------------
ISO/FDIS 22496:2021(E)

3.1.13
fanlight
infill panel of glass or translucent material fitted within a window frame, above the moving sash(es)/
casement(s) and with a solid member (transom) between it and the moving part(s)
Note 1 to entry: See Figure 6.
Key
1 fanlight
Figure 6 — Fanlight
3.1.14
fastened
state where the movable part is restrained at one or more points
3.1.15
fixed light
window with infill fitted directly into the frame
Note 1 to entry: in some countries the term fixed light is used for fixed window.
Note 2 to entry: See Figure 1 and Figure A.1 a).
3.1.16
fixed window
window with infill mounted in a sash or casement construction but which differs from an openable
window only in that the hardware used does not permit the sash/casement to be opened on a regular
basis but holds the sash/casement to the frame
Note 1 to entry: A fixed window contains all the gaskets that an openable window does and these can be replaced
by dismantling the sash or casement from the frame.
Note 2 to entry: See Figure 1 and Figure A.1 b).
3.1.17
frame
component forming the perimeter of a window, enabling it to be fixed to the building structure
Note 1 to entry: See Figure 1 and Figure 7 and Figure 9.
© ISO 2021 – All rights reserved 5

---------------------- Page: 9 ----------------------
ISO/FDIS 22496:2021(E)

Key
1 frame
2 casement or sash
Figure 7 — Frame
3.1.18
glazing
transparent or translucent infill, together with all the components required to hold it within a frame
3.1.19
glazing bar
member subdividing the glazed area into smaller panes, either physically (Georgian bar) or visually
(cross­ or attached bar)
Note 1 to entry: See A.2 for different types of glazing bar.
Note 2 to entry: See Figure 2.
3.1.20
glazing bead
section retaining infill within its frame
Note 1 to entry: Term “glazing stop” is also used in some countries when the infill is glass.
Note 2 to entry: See Figure 1.
3.1.21
head
top horizontal member of a window frame
Note 1 to entry: See Figure 1.
3.1.22
infill
panel of transparent or opaque material or combination of materials
3.1.23
interlocking stile
stile that is one of a pair of stiles that are designed to engage with each other in the closed position for
sliding products
3.1.24
jamb
vertical side member of a window frame
Note 1 to entry: See Figure 1.
6 © ISO 2021 – All rights reserved

---------------------- Page: 10 ----------------------
ISO/FDIS 22496:2021(E)

3.1.25
latched
movable part is returned to its closed position and restrained by either a) a self‐engaging fastener or b)
a roller catch or c) a latch
Note 1 to entry: Latched is one of the fastened closing conditions (see 3.1.14).
3.1.26
locked
movable part is further restrained in the closed position by additional operations (of e.g. handle, key,
automatic devices or electronic devices) to engage integrated locking devices (e.g. nutbolts or deadbolts)
which will affect the product’s characteristics
Note 1 to entry: Locked is one of the fastened closing conditions (see 3.1.14).
3.1.27
mullion
vertical or inclined component which subdivides a frame into sashes/casements or connects two frames
Note 1 to entry: See Figure 1.
3.1.28
passive sash
passive casement
sash/casement of a multi­light window, intend to be moved after the active sash/casement
Note 1 to entry: See Figure 2.
3.1.29
pivot window
window that opens by pivoting either horizontally or vertically
Note 1 to entry: See A.1.2 for different types of pivot window.
3.1.30
rebate
recess in a frame, into which a moving element fits
Note 1 to entry: See Figure 8.
Key
1 rebate “r”
2 rebate “R”
3 wall
Figure 8 — Rebate
© ISO 2021 – All rights reserved 7

---------------------- Page: 11 ----------------------
ISO/FDIS 22496:2021(E)

Note 2 to entry: A rebate has two measurements, “r” the width of the rebate measured in the same plane as the
width of the casement and “R” the depth of the rebate measured in the same plane as the thickness of the moving
element.
Note 3 to entry: See B.2 for examples of different types of rebate.
3.1.31
ribbon window
two or more windows which are attached to each other (either horizontally or vertically) without
supporting structure between them
3.1.32
roof window
skylight
window intended for installation in a roof. Roof windows/ Skylights have the same characteristics as
windows installed in walls with regard to function, cleaning, maintenance and durability
3.1.33
sash
opening element of a sliding window
Note 1 to entry: See Figure 1 and Figure 7.
3.1.34
screen
assembly of two or more windows and/or doorsets in one plane, with or without separate frames
3.1.35
secured
any action(s) which prevent unauthorised release of the fastening device(s) to allow exit or entry (e.g.
child safety, burglary)
3.1.36
sill
bottom member of a window frame
Note 1 to entry: See Figure 1.
3.1.37
single window
window with casement or sash in only one layer
Note 1 to entry: See Figure 9.
Key
1 sash/casement
2 frame
Figure 9 — Single window
8 © ISO 2021 – All rights reserved

---------------------- Page: 12 ----------------------
ISO/FDIS 22496:2021(E)

3.1.38
sliding window
window with one or more sashes where at least one slides either horizontally or vertically
3.1.39
stile
vertical edge member of a sash/casement
3.1.40
top rail
uppermost horizontal member of a sash/casement
Note 1 to entry: See Figure 1.
3.1.41
transom
horizontal component which subdivides a frame into sashes/casements or fixed lights
Note 1 to entry: See Figure 1.
3.1.42
window
building component or multiple components for closing an opening in a wall or roof that may admit
light and/or provide ventilation
Note 1 to entry: See Figure 1.
© ISO 2021 – All rights reserved 9

---------------------- Page: 13 ----------------------
ISO/FDIS 22496:2021(E)

3.2 Terminology for pedestrian doors
Key
1 frame
2 head
3 overpanel
4 transom
5 top or head rail
6 jamb
7 glazed panel
8 flat panel
9 stile
10 midrail
11 muntin
12 bottom rail
13 threshold
Figure 10 — Overview door component
Note 1 to entry Terminology for doors also covers terminology used for inspection hatches.
Note 2 to entry See B.1 for cross­sections and opening functions of doors.
10 © ISO 2021 – All rights reserved

---------------------- Page: 14 ----------------------
ISO/FDIS 22496:2021(E)

3.2.1
active leaf
leaf of a multi‐leaved hinged or pivoted doorset, intended to be moved first to provide opening
Note 1 to entry: see Figure 11.
Key
1 passive leaf
2 active leaf
Figure 11 — Active leaf
3.2.2
astragal
small moulding attached to one opening stile of a pair of doors which, when the doors are closed, cover
the clearance gap
Note 1 to entry: See Figure 16.
3.2.3
bottom rail
horizontal component at the bottom of a door leaf construction
Note 1 to entry: See Figure 10.
3.2.4
clear opening height
minimum clear height of the door opening, which allows unrestricted passage through the open
doorway
Note 1 to entry: See Figure 12.
Key
1 clear opening height
Figure 12 — Clear opening height
© ISO 2021 – All rights reserved 11

---------------------- Page: 15 ----------------------
ISO/FDIS 22496:2021(E)

3.2.5
closed
movable parts rest in or at the fixed parts in a way in which they may be fastened (latched and/or
locked)
3.2.6
closing face
face of a door leaf which is the first to move into the closed position
Note 1 to entry: See Figure 13.
Key
1 opening face
2 closing face
3 reveal
Figure 13 — Closing face
3.2.7
direction of rotation
movement of a hinged or pivoted door leaf around its fixing, either clockwise or counter‐clockwise
Note 1 to entry: See Figure 14.

a
Direction of rotation – clockwise.
b
Direction of rotation – counter­clockwise.
Figure 14 — Direction of rotation
3.2.8
doorset
door
building component which is designed and used to close a permanent opening in separating elements
and supplied complete with all essential parts from a single source, and for which the main intended
use is the access of pedestrians
12 © ISO 2021 – All rights
...