IS : 2191 (Part 2) - 1983

(Reaffirmed 2001)
Edition 4.1
(2000-09)
Indian Standard
SPECIFICATION FOR
WOODEN FLUSH DOOR SHUTTERS
( CELLULAR AND HOLLOW CORE TYPE )
PART 2 PARTICLE BOARD AND HARDBOARD
FACE PANELS

( Third Revision )
(Incorporating Amendment No. 1)

UDC 69.028.1.011-413:674.816-41

© BIS 2003

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN , 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

Price Group 3
 IS : 2191 (Part 2) - 1983

Indian Standard
SPECIFICATION FOR
WOODEN FLUSH DOOR SHUTTERS
( CELLULAR AND HOLLOW CORE TYPE )
PART 2 PARTICLE BOARD AND HARDBOARD
FACE PANELS

( Third Revision )
Doors, Windows and Shutters Sectional Committee, BDC 11
Chairman
SHRI T. S. NARAYANA RAO
Consulting Architect & Engineer
93 ‘Aruna’, East Road
Basavangudi, Bangalore 560004
Members Representing
SHRI H. S. ANAND Anand Industries Limited, New Delhi
SHRI P. N. ANAND ( Alternate )
SHRI S. N. BASU Directorate General of Supplies & Disposals,
New Delhi
SHRI SHARAN SINGH ( Alternate )
SHRI J. S. BEDI Hopes Manufacturing Co Pvt Ltd, Calcutta
SHRI G. L. DE ( Alternate )
DIRECTOR Indian Plywood Industries Research Institute,
Bangalore
DR H. N. JAGADEESH ( Alternate )
SHRI P. G. GANDHI Swastik Rolling Shutters and Engineering Works,
Bombay
SHRI B. P. GANDHI ( Alternate )
SHRI A. S. GULATI Forest Research Institute & Colleges (Timber
Mechanics Branch), Dehra Dun
SHRI B. K. JHAJHARIA Multiwyn Industrial Corporation, Calcutta
SHRI A. K. JHAVERI Ahmedabad Steel Craft and Rolling Mills (Pvt) Ltd,
Ahmadabad
SHRI H. S. SAMBA MURTHY ( Alternate )
SHRI S. N. JHUNJHUNWALA Premier Wood Craft (P) Ltd, Calcutta
SHRI S. K. JHUNJHUNWALA ( Alternate )
SHRI M. K. LAKHANI Maharashtra Housing Board, Bombay
( Continued on page 2 )

© BIS 2003
BUREAU OF INDIAN STANDARDS
This publication is protected under the Indian Copyright Act (XIV of 1957) and
reproduction in whole or in part by any means except with written permission of the
publisher shall be deemed to be an infringement of copyright under the said Act.
IS : 2191 (Part 2) - 1983

( Continued from page 1 )

Members Representing
SHRI K. S.LAULY Indian Plywood Manufacturing Co Ltd, Bombay
LT-COL G. B. SINGH ( Alternate )
SHRI J. S. MATHARU Directorate General of Technical Development,
New Delhi
SHRI K. SREENIVASAN ( Alternate )
SHRI J. V. MEHTA Engineer-in-Chief’s Branch, Army Headquarters,
New Delhi
MAJ B. K. TANEJA ( Alternate )
SHRI G. M. MENON Indian Aluminium Co Ltd, Calcutta
SHRI K. SURYANARAYANAN ( Alternate )
SHRI R. D. MENON Diana Shutters Pvt Ltd, Madras
SHRI S. ANANTHASUBRAMONEY ( Alternate )
SHRI M. M. MISTRY National Buildings Organization, New Delhi
SHRI B. D. DHAWAN ( Alternate )
SHRI MOHAN SINGH Eastern Commercial & Industrial Enterprises (P)
Ltd, Bangalore
SHRI S. S. GANDHI ( Alternate )
SHRI J. S. PARMAR Mysore Plywoods Ltd, Bangalore
SHRI K. SANKARAKRISHNAN Kutty Flush Doors and Furniture Co Ltd, Madras
SHRI R. S. RAGHAVAN ( Alternate )
SHRI P. K. SINGHLA Builders’ Association of India, Bombay
SHRI T. C. SOLANKI Indian Metal Windows Association, Bombay
SHRI M. P. SHAH ( Alternate )
SUPERINTENDING SURVEYOR OF Central Public Works Department, New Delhi
WORKS (FOOD)
SURVEYOR OF WORKS (FOOD) ( Alternate )
SHRI G. R. SUNDERAM Man Industrial Corporation Ltd, Jaipur
SHRI H. G. TODI ( Alternate )
SHRI H. THOMSON Sitapur Plywood Manufacturers’ Ltd, Sitapur
SHRI B. K. TYAGI Central Building Research Institute (CSIR), Roorkee
SHRI T. N. GUPTA ( Alternate )
SHRI G. RAMAN, Director General, BIS ( Ex-officio Member )
Director (Civ Engg)
Secretary
SHRI C. K. BEBARTA
Senior Deputy Director (Civ Engg), BIS

2
 IS : 2191 (Part 2) - 1983

Indian Standard
SPECIFICATION FOR
WOODEN FLUSH DOOR SHUTTERS
( CELLULAR AND HOLLOW CORE TYPE )
PART 2 PARTICLE BOARD AND HARDBOARD
FACE PANELS

( Third Revision )
0. F O R E W O R D
0.1 This Indian Standard (Part 2) (Third Revision) was adopted by the
Indian Standards Institution on 30 June 1983, after the draft finalized
by the Doors, Windows and Shutters Sectional Committee had been
approved by the Civil Engineering Division Council.
0.2 This standard was first published in 1962 and subsequently
revised in 1966 and 1980. During this period the standard has
undergone modifications relating to grade of doors, species of timber,
etc, and the sizes were rationalized.
0.3 Keeping in view the advantages of modular co-ordination. Indian
Standards specify the dimensions of components in modular units. In
line with this, the dimensions of shutters were also specified in modular
units. However, it was repeatedly brought to the notice of the
Committee that there was sufficient demand for sizes other than
modular sizes and that the manufacturers were meeting such demands
at present. This had led to a situation where shutters satisfying the
other requirements of the standard, but not the requirements regarding
the dimensions were classified as not satisfying the requirements of the
standard. This situation also came in the way of satisfying the
consumer needs for other quality requirements by a third party
inspection system. Therefore, with a view to encouraging production of
timber shutters to the quality requirements specified in the standard,
the Committee reviewed the relevant clauses of the Indian Standards
and decided to relax the dimensional requirements in this third revision
by permitting non-modular sizes in addition to the modular sizes
specified in the standard at present. However, the relaxation has been
made only in the height and width, the thickness remaining unchanged
from the present provisions. This relaxation will be for a period of four
years from the publication of this standard and it is intended that the
manufacturers and consumers organizations can gradually switch over
within this period to the modular sizes, which are the preferred sizes.

3
IS : 2191 (Part 2) - 1983
0.3.1 Wooden flush door shutters using particle board for face panels
are generally manufactured in the same way as the doors with
plywood face panels. This standard, therefore, covers only the
necessary requirements and provisions which are additional or
alternative to those covered in IS : 2191 (Part 1)-1983*.
0.4 A scheme of labelling environment friendly products to be known as
ECO Mark is being introduced at the instance of the Ministry of
Environment and Forests (MEF), Government of India. The ECO Mark
shall be administered by the Bureau of Indian Standards (BIS) under the
BIS Act, 1986 as per the Resolution No. 71 dated 21 February 1991
published in the Gazette of the Government of India. For a product to be
eligible for ECO Mark, it shall also carry the Standard Mark of the BIS
besides meeting additional optional environment friendly requirements.
0.5 This edition 4.1 incorporates Amendment No. 1 (September 2000).
Side bar indicates modification of the text as the result of
incorporation of the amendment.
0.6 For the purpose of deciding whether a particular requirement of
this standard is complied with, the final value, observed or calculated,
expressing the result of a test or analysis, shall be rounded off in
accordance with IS : 2-1960†. The number of significant places
retained in the rounded off value should be the same as that of the
specified value in this standard.
1. SCOPE
1.1 This standard (Part 2) lays down the requirements regarding
material, grade, types, sizes, construction, finishes and tests of wooden
flush door shutters of cellular and hollow core type with particle board
face panels (both veneered and unveneered) and hard-board face panels.
2. TYPES AND DESIGNATION
2.1 Cellular and hollow solid core flush door shutters with particle
board face panels may be of the decorative type or non-decorative
(paintable) type. The designation of various types of shutters shall be
based on the type of core and the type of face panel as given in Table 1.
3. SIZES AND TOLERANCES
3.1 Sizes of the door shutters shall generally conform to the modular
sizes specified in Table 2 ( see also Fig. 1 ). Sizes other than modular
sizes, as agreed to between the manufacturer and the purchaser, may
also be permitted; however, the thickness of shutters in such cases
shall not be less than those specified against the nearest higher
modular size given in 3.2.
*Specification for wooden flush door shutters (cellular and hollow core type): Part 1
Plywood face panels ( fourth revision ).
†Rules for rounding off numerical values ( revised ).
4
 IS : 2191 (Part 2) - 1983

TABLE 1 DESIGNATION OF WOODEN FLUSH DOOR SHUTTERS,

CELLULAR AND HOLLOW CORE TYPES WITH PARTICLE
BOARD FACE PANELS
( Clause 2.1 )
CORE TYPE DESIGNATION
Cellular Decorative with skins of decorative CDPV
veneered particle boards
Non-decorative with skins of particle CNP
boards unveneered
Non-decorative with skins of particle CNPV
boards veneered with commercial
veneers
Hollow Decorative with skins of decorative HDPV
veneered particle boards
Non-decorative with skins of particle HNP
boards unveneered
Non-decorative with skins of particle HNPV
boards veneered with commercial
veneers

TABLE 2 DIMENSIONS OF FLUSH DOOR SHUTTERS

( Clause 3.1 )
DESIGNATION OF DOORS WIDTH HEIGHT
mm mm
08 DS 20 1 700 1 905 ( 1 945 )
08 DS 21 1 700 2 005 ( 2 045 )
09 DS 20 1 800 1 905 ( 1 945 )
09 DS 21 1 800 2 005 ( 2 045 )
10 DS 20 1 900 1 905 ( 1 945 )
10 DS 21 1 900 2 005 ( 2 045 )
12 DT 20 1 100* 1 905 ( 1 945 )
12 DT 21 1 100* 2 005 ( 2 045 )
NOTE 1 — D = Door, S = Single shutter, and T = Double shutter.
NOTE 2 — The designation indicates the size of door opening, the first number
referring to width in modules of 100 mm and the last number the height in modules.
NOTE 3 — Standard sizes of door frames are covered in IS : 4021-1983† and
IS : 4351-1976‡.
NOTE 4 — In arriving at the standard widths and heights for flush doors, an
allowance of 60 mm has been made for door frames, 40 mm for floor finish and 5 mm for
clearance all round ( see also Fig. 1 ) between the door opening and door frame and 15
mm for rebate all round for the shutter into the frame. In case, the modular height is
taken from the finished floor level, the height of the flush door shall be the one given in
the bracket. In the case of double shutters, the rebate and clearance between the
shutters shall be as given in 6.7 of IS : 2191 (Part 1)-1983§.
*Combined width of two shutters in closed position.
†Specification for timber door, window and ventilator frames ( second revision ).
‡Specification for steel door frames ( first revision ).
§Specification for wooden flush door shutters (cellular and hollow core type) : Part 1
Plywood face panels ( fourth revision ).

5
IS : 2191 (Part 2) - 1983

FIG. 1 SKETCH ILLUSTRATING DIMENSIONS OF SHUTTER

6
 IS : 2191 (Part 2) - 1983
3.2 Nominal thickness of shutters shall be 25, 30 or 35 mm.
NOTE — It is recommended that, as far as possible, the thickness adopted for flush
doors should be as given below:
Flush Door Designation Thickness of Shutter
mm
18 DS 20 and 8 DS 21 25
19 DS 20 and 9 DS 21 30 or 35
10 DS 20 and 10 DS 21 35
12 DT 20 and 12 DT 21 35

3.3 Tolerances — Tolerance on nominal width and height shall be

+ 3 mm and the tolerance on nominal thickness shall be ± 1.2 mm. The
–0
thickness of the door shutter shall be uniform throughout with a
permissible variation of not more than 0.8 mm when measured at any
two points.
4. MATERIAL
4.1 Timber — Species of timber, moisture content and permissible
defects therein and preservative treatment required for use in the core
and lipping shall conform to the relevant requirements laid down in
IS : 2191 (Part 1)-1983*.
4.2 Particle Board — Particle boards used for core as well as face
panels of flush doors shall be made with phenol formaldehyde adhesive
and the swelling in thickness and length when tested in accordance
with IS : 2380 (Part 17)-1977†, shall not exceed 5 percent.
4.2.1 Unveneered particle board used for face panel of flush door
shutters of CNP and HNP types shall conform to Types FPSI or FPTH
of IS : 3087-1965‡, and shall be manufactured using Type BWR
synthetic resin adhesives conforming to IS : 851-1978§, and out of
naturally durable timbers listed on Appendix A of IS : 1659-1979||.
4.2.2 For CDPV and HDPV types of flush door shutters, face panel of only
veneered particle board of Type ESD of IS : 3097-1980¶ shall be used.
4.2.3 For flush door shutters of CNPV and HNPV (veneered) the
particle board with commercial veneers conforming to Type ESC of
IS : 3097-1980¶ shall be used.
*Specification for wooden flush door shutters (cellular and hollow core type) : Part 1
Plywood face panels ( fourth revision ).
†Methods of test for wood particle boards and boards from other lignocellulosic
materials : Part 17 Determination of swelling in water ( first revision ).
‡Specification for wood particle boards (medium density) for general purposes.
§Specification for synthetic resin adhesives for construction work (non-structural) in
wood ( first revision ).
|| Specification for blockboards ( second revision ).
¶Specification for veneered particle boards ( first revision ).
7
IS : 2191 (Part 2) - 1983
4.3 Fibre Hardboard — For shutters with fibre hardboard face only
tempered hardboards conforming to IS : 1658-1977*.
4.4 Adhesive — Adhesive used for bonding particle board or fibre
hardboard face panels to the core shall be phenol formaldehyde
synthetic resin conforming to BWP type specified in IS : 848-1974†.
5. CONSTRUCTION
5.1 The construction of flush doors shall be in accordance with the
relevant requirements laid down in IS : 2191 (Part 1)-1983‡ with
modifications as in 5.2.
5.2 Face Panel — The particle board or veneered particle board for
the face panel shall be not less than 6 mm thick in the case of cellular
core flush doors and not less than 9 mm thick in the case of hollow core
flush doors. Hardboard, if used, for the face panel shall be not less
than 4 mm in thickness in the case of cellular core flush doors and not
less than 6 mm in thickness in the case of hollow core flush doors. The
panel shall be glued under pressure on both faces of the core by the hot
press process.
6. FITTINGS
6.1 Locks — Shutters shall be shop-prepared for taking mortice locks
or latches as may be ordered. Where the purchaser so desires, suitable
blocks of wood may be provided for fixing the hardware; in the absence
of specified requirements, the sizes of blocks shall preferably
correspond to the maximum size of lock covered in IS : 2209-1976§.
6.2 Where special blocks are provided for fixing hardware, these
portions shall be so marked in indelible ink.
7. WORKMANSHIP AND FINISH
7.1 All the four edges of the door shutter shall be square. The shutter
shall be free from twist or warp in its plane.
7.2 Both faces of the door shutter shall be sanded to a smooth even
texture. If required by the purchaser, all surfaces of shutters which are
required to be painted ultimately shall be covered evenly by brush
painting with suitable priming coat as may be ordered by the
purchaser [ see also IS : 2380 (Part 1)-1977||.
*Specification for fibre hardboards ( second revision ).
†Specification for synthetic resin adhesives for plywood (phenolic and aminoplastic)
( first revision ).
‡Specification for wooden flush door shutters (cellular and hollow core type) : Part 1
Plywood face panels ( fourth revision ).
§Specification for mortice locks (vertical type) ( third revision ).
|| Methods of test for wood particle boards and boards from other lignocellulosic
materials : Part 1 Preparation and conditioning of test specimens ( first revision ).
8
 IS : 2191 (Part 2) - 1983
7.3 Workmanship and finish of face panels shall conform to the
requirements specified for the respective grades and types of particle
boards in IS : 3087-1965* and IS : 3097-1980†.
8. TESTS
8.1 The various tests for flush door shutters shall be as laid down in 9
of IS : 2191 (Part 1)-1983‡.
9. SAMPLING AND CRITERIA FOR CONFORMITY
9.1 The sampling and criteria for conformity for flush door shutters
shall be as laid down in 10 of IS : 2191 (Part 1)-1983‡.
10. REQUIREMENTS FOR ECO MARK
10.1 Particle Board and Hardboard Face Panels shall be manufactured
from agricultural of industrial wastes or wood residues or wood from
sources other than natural forests such as timber from industrial and
social forestry plantations, shade trees from tea and coffee estates etc
as specified in IS 2191 (Part 1) : 1983 and such Particle Board and
Hardboard Face Panels shall conform to the requirements of quality
and performance as specified in this standard as well as the
requirements of ECO Mark for all the referred standards.
NOTES
1 The Manufactures shall provide documentary evidence by way of certificate or
declaration to Bureau of Indian Standards while applying for ECO Mark.
2. The manufacturers shall produce to BIS environmental consent clearance from the
concerned state Pollution Control Board as per the provisions of the Water
( Prevention and Control of Pollution ) Act, 1974 and Air ( Prevention and Control of
Pollution ) Act, 1981 alongwith the authorization, if required under the Environment
( Protection ) Act, 1986, while applying for ECO Mark.

11. MARKING
11.1 Each shutter shall be legibly and indelibly marked on any of its
edges with the following information:
a) Name of the manufacturer or trade-mark, if any;
b) Abbreviation indicating the nature of construction of the shutter
( see 2.1 ).

*Specification for wood particle boards (medium density) for general purposes.
†Specification for veneered particle boards ( first revision ).
‡Specification for wooden flush door shutters (cellular and hollow core type) : Part 1
Plywood face panels ( fourth revision ).

9
IS : 2191 (Part 2) - 1983
c) Designation as specified in Table 2 of the standard for modular
sizes; or the actual size (width and height) for non-modular sizes
along with appropriate symbols for door shutters as given in
Table 2; and
d) Thickness of door shutters ( see 3.2 ).
e) Species of timber, in case of ECO Mark; and
f) The criteria for which the product has been labelled as ECO
Mark.
11.1.1 The shutter may also be marked with the Standard Mark.
NOTE — The use of the Standard Mark is governed by the provisions of the Bureau of
Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The
Standard Mark on products covered by an Indian Standard conveys the assurance
that they have been produced to comply with the requirements of that standard
under a well defined system of inspection, testing and quality control which is
devised and supervised by BIS and operated by the producer. Standard marked
products are also continuously checked by BIS for conformity to that standard as a
further safeguard. Details of conditions under which a licence for the use of the
Standard Mark may be granted to manufacturers or producers may be obtained from
the Bureau of Indian Standards.

10
INTERNATIONAL SYSTEM OF UNITS (SI UNITS)
Base Units

QUANTITY UNIT SYMBOL

Length metre m
Mass kilogram kg
Time second s
Electric current ampere A
Thermodynamic kelvin K
temperature
Luminous intensity candela cd
Amount of substance mole mol
Supplementary Units
QUANTITY UNIT SYMBOL
Plane angle radian rad
Solid angle steradian sr
Derived Units
QUANTITY UNIT SYMBOL DEFINITION
Force newton N 1 N = 1 kg.m/s2
Energy joule J 1 J = 1 N.m
Power watt W 1 W = 1 J/s
Flux weber Wb 1 Wb = 1 V.s
Flux density tesla T 1 T = 1 Wb/m2
Frequency hertz Hz 1 Hz = 1 c/s (s–1)
Electric conductance siemens S 1 S = 1 A/V
Electromotive force volt V 1 V = 1 W/A
Pressure, stress pascal Pa 1 Pa = 1 N/m2
Bureau of Indian Standards
BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote
harmonious development of the activities of standardization, marking and quality certification of
goods and attending to connected matters in the country.
Copyright
BIS has the copyright of all its publications. No part of these publications may be reproduced in any
form without the prior permission in writing of BIS. This does not preclude the free use, in the course
of implementing the standard, of necessary details, such as symbols and sizes, type or grade
designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS.
Review of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also
reviewed periodically; a standard along with amendments is reaffirmed when such review indicates
that no changes are needed; if the review indicates that changes are needed, it is taken up for
revision. Users of Indian Standards should ascertain that they are in possession of the latest
amendments or edition by referring to the latest issue of ‘BIS Catalogue’ and ‘Standards : Monthly
Additions’.
This Indian Standard has been developed by Technical Committee : BDC 11 and amended by CED 11

Amendments Issued Since Publication

Amend No. Date of Issue
Amd. No. 1 September 2000

BUREAU OF INDIAN STANDARDS

Headquarters:
Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002. Telegrams: Manaksanstha
Telephones: 323 01 31, 323 33 75, 323 94 02 (Common to all offices)
Regional Offices: Telephone
Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg  323 76 17

NEW DELHI 110002  323 38 41

Eastern : 1/14 C. I. T. Scheme VII M, V. I. P. Road, Kankurgachi  337 84 99, 337 85 61


KOLKATA 700054  337 86 26, 337 91 20
Northern : SCO 335-336, Sector 34-A, CHANDIGARH 160022  60 38 43

 60 20 25
Southern : C. I. T. Campus, IV Cross Road, CHENNAI 600113  235 02 16, 235 04 42

 235 15 19, 235 23 15
Western : Manakalaya, E9 MIDC, Marol, Andheri (East)  832 92 95, 832 78 58

MUMBAI 400093  832 78 91, 832 78 92
Branches : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE.
FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW.
NAGPUR. NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM.
VISHAKHAPATNAM