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IS 1003 Part 1 : 2003Timber Panelled and Glazed Shutters - Part 1: Door Shutters (B.L.T. type)

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WDMA I.S. 6A · AS 2688 · BS EN 14351-2
CurrentFrequently UsedSpecificationBIMArchitectural · Doors, Windows and Shutters
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OverviewValues5InternationalTablesFAQ3Related

IS 1003:2003 Part 1 is the Indian Standard (BIS) for timber panelled and glazed shutters - part 1: door shutters (b.l.t. type). This standard specifies the requirements for timber panelled and glazed door shutters. Engineers, architects, and builders use it to define material quality, standard dimensions, permissible tolerances, and construction methods (like mortise and tenon jointing) for wooden door shutters in buildings.

Specifies requirements for timber panelled and glazed door shutters of B.L.T. type.

Overview

Status
Current
Usage level
Frequently Used
Domain
Architectural — Doors, Windows and Shutters
Type
Specification
International equivalents
WDMA I.S. 6A-2013 · WDMA (US)AS 2688-1984 · Standards Australia (AU)BS EN 14351-2:2018 · CEN (EU) / BSI (UK)
Typically used with
IS 287IS 303IS 401IS 710IS 1141IS 2046
Also on InfraLens for IS 1003
5Key values2Tables3FAQs

BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.

Practical Notes
! Always verify that the moisture content of the timber matches the climatic zone requirements specified in IS 287 to prevent warping, bowing, or shrinkage after installation.
! Inspect the mortise and tenon joints closely; they must be accurately machined, tightly fitted, properly glued, and securely wedged or pinned to ensure the structural integrity of the door.
Frequently referenced clauses
Cl. 5MaterialsCl. 6Dimensions, Sizes and TolerancesCl. 7ConstructionCl. 8Workmanship and Finish
Pulled from IS 1003:2003. Browse the full clause & table index below in Tables & Referenced Sections.
timberwoodglassplywoodadhesives

International Equivalents

Similar International Standards
WDMA I.S. 6A-2013WDMA (US)
HighCurrent
Industry Standard for Architectural Wood Stile and Rail Doors
Covers materials, construction, and finishing of prescriptive stile and rail (panelled) doors.
AS 2688-1984Standards Australia (AU)
HighCurrent
Timber doors
Specifies requirements for materials, construction, and dimensions for timber doors, including panelled doors.
BS 4787-1:1980BSI (UK)
MediumWithdrawn
Internal and external wood doorsets, door leaves and frames - Part 1: Specification for dimensional requirements
Provided prescriptive dimensional and constructional requirements similar to the IS code's approach.
BS EN 14351-2:2018CEN (EU) / BSI (UK)
LowCurrent
Windows and doors - Product standard, performance characteristics - Part 2: Internal pedestrian doorsets
Covers internal doors but is a performance-based standard (acoustics, fire, etc.), not a prescriptive construction guide.
Key Differences
≠IS 1003 is highly prescriptive, dictating exact dimensions, joint types, and construction methods. Modern international standards like BS EN 14351-2 are performance-based, specifying results (e.g., acoustic rating, thermal transmittance) rather than how the door is built.
≠IS 1003 lists specific Indian timber species (e.g., Teak, Deodar, Shisham). International standards like WDMA I.S. 6A list North American species or provide generic grading rules applicable to a wider range of timbers.
≠The Indian standard specifies adhesive requirements by referencing other Indian standards (e.g., IS 851). WDMA I.S. 6A specifies adhesives based on performance types (Type I - Waterproof, Type II - Water-Resistant) linked to specific ASTM test methods, which is a more functional classification.
≠Standard door sizes and thicknesses are country-specific. IS 1003 provides a table of standard sizes common in India (e.g., 2045x900 mm), which differs significantly from the imperial-based standard sizes in US standards or metric sizes in European ones.
Key Similarities
≈All equivalent prescriptive standards (IS 1003, WDMA I.S. 6A, AS 2688) are based on the same fundamental stile and rail construction principle, forming a rigid frame to hold infill panels.
≈All standards emphasize the use of strong, traditional joinery. They specify or recommend mortise and tenon joints, or alternatively dowel joints, for connecting stiles and rails to ensure structural integrity.
≈A common requirement across all standards is that timber panels must be fitted into grooves in a way that allows them to 'float', accommodating natural expansion and contraction due to moisture changes without splitting or warping the door frame.
≈All standards mandate strict quality control for timber, requiring it to be properly seasoned and free from defects like large knots, decay, insect attack, and splits that would compromise the door's strength, stability, or appearance.
Parameter Comparison
ParameterIS ValueInternationalSource
Shutter/Door Thickness25, 30, 35, or 40 mm1-3/8" (35 mm) or 1-3/4" (44 mm) are standardWDMA I.S. 6A-2013
Minimum Stile Width100 mm4-1/2" (114 mm) for Custom Grade; 5" (127 mm) for Premium GradeWDMA I.S. 6A-2013
Timber Moisture ContentNot more than 12% (typically 8-12%)6% to 12% at time of fabricationWDMA I.S. 6A-2013
Minimum Bottom Rail Width150 mm (for panelled)9-1/8" (232 mm) for Premium Grade (without bottom rail cap)WDMA I.S. 6A-2013
Minimum Solid Wood Panel ThicknessNot less than 12 mmFlat panels: 3/8" (9.5mm) min; Raised panels: 5/8" (15.9mm) minWDMA I.S. 6A-2013
Stile & Rail Joint TypeMortised and tenoned, or dowelledDowel or stile and rail tenon constructionWDMA I.S. 6A-2013
⚠ Verify details from original standards before use

Key Values5

Quick Reference Values
Standard shutter thicknesses25, 30, 35, and 40 mm
Tolerance on width and height± 3 mm
Tolerance on thickness± 1 mm
Minimum width of stiles100 mm (for 35mm & 40mm thick shutters)
Minimum depth of rebate12 mm

Tables & Referenced Sections

Key Tables
Table 1 - Dimensions of Timber Door Shutters
Table 2 - Minimum Thickness of Styles and Rails
Key Clauses
Clause 5 - Materials
Clause 6 - Dimensions, Sizes and Tolerances
Clause 7 - Construction
Clause 8 - Workmanship and Finish

Related Resources on InfraLens

Cross-Referenced Codes
IS 287:2022Code of Practice for Design of Timber Structu...
→
IS 303:1989Plywood for General Purposes - Specification
→
IS 401:2001Code of Practice for Preservation of Timber
→
IS 710:2010Marine Plywood - Specification
→
IS 1141:1993Seasoning of timber- Code of practice
→
IS 2046:2019Spindle Type Gate Valves for Water Works
→

Frequently Asked Questions3

What is the acceptable tolerance for door shutter dimensions?+
The permissible tolerance is ± 3 mm for overall width and height, and ± 1 mm for thickness.
What are the standard thickness options for timber door shutters?+
The standard specified thicknesses are 25 mm, 30 mm, 35 mm, and 40 mm.
How should the timber frame joints be constructed?+
The standard mandates that stile and rail joints must be mortise and tenon joints, properly glued, and wedged or pinned.

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