MasterFormat Specification Divisions (CURRENT)

The Construction Specifications Institute (CSI) publishes the MasterFormat, which is the standard that is used most often for formatting construction specifications. The CSI website has a PDF containing the full list of MasterFormat Divisions and Sub-levels. Below is a list of divisions and the first level of sub-divisions of MasterFormat.

We have also made the old system 1995 MasterFormat divisions available.

Jump to Division:
00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 21 | 22
23 | 25 | 26 | 27 | 28 | 31 | 32 | 33 | 34 | 35 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 48

Division 00 - Procurement and Contracting Requirements
• 00 00 00 - Procurement and Contracting Requirements
• 00 10 00 - Solicitation
• 00 20 00 - Instructions for Procurement
• 00 30 00 - Available Information
• 00 40 00 - Procurement Forms and Supplements
• 00 50 00 - Contracting Forms and Supplements
• 00 60 00 - Project Forms
• 00 70 00 - Conditions of the Contract
• 00 80 00 - Unassigned
• 00 90 00 - Revisions, Clarifications, and Modifications

Division 01 - General Requirements
• 01 00 00 - General Requirements
• 01 10 00 - Summary
• 01 20 00 - Price and Payment Procedures
• 01 30 00 - Administrative Requirements
• 01 40 00 - Quality Requirements
• 01 50 00 - Temporary Facilities and Controls
• 01 60 00 - Product Requirements
• 01 70 00 - Execution and Closeout Requirements
• 01 80 00 - Performance Requirements
• 01 90 00 - Life Cycle Activities

Division 02 - Existing Conditions
• 02 00 00 - Existing Conditions
• 02 10 00 - Unassigned
• 02 20 00 - Assessment
• 02 30 00 - Subsurface Investigation
• 02 40 00 - Demolition and Structure Moving
• 02 50 00 - Site Remediation
• 02 60 00 - Contaminated Site Material Removal
• 02 70 00 - Water Remediation
• 02 80 00 - Facility Remediation
• 02 90 00 - Unassigned

Division 03 - Concrete
• 03 00 00 - Concrete
• 03 10 00 - Concrete Forming and Accessories
• 03 20 00 - Concrete Reinforcing
• 03 30 00 - Cast-in-Place Concrete
• 03 40 00 - Precast Concrete
• 03 50 00 - Cast Decks and Underlayment
• 03 60 00 - Grouting
• 03 70 00 - Mass Concrete
• 03 80 00 - Concrete Cutting and Boring
• 03 90 00 - Unassigned

Division 04 - Masonry
• 04 00 00 - Masonry
• 04 10 00 - Unassigned
• 04 20 00 - Unit Masonry
• 04 30 00 - Unassigned
• 04 40 00 - Stone Assemblies
• 04 50 00 - Refractory Masonry
• 04 60 00 - Corrosion-Resistant Masonry
• 04 70 00 - Manufactured Masonry
• 04 80 00 - Unassigned
• 04 90 00 - Unassigned

Division 05 - Metals
• 05 00 00 - Metals
• 05 10 00 - Structural Metal Framing
• 05 20 00 - Metal Joists
• 05 30 00 - Metal Decking
• 05 40 00 - Cold-Formed Metal Framing
• 05 50 00 - Metal Fabrications
• 05 60 00 - Unassigned
• 05 70 00 - Decorative Metal
• 05 80 00 - Unassigned
• 05 90 00 - Unassigned

Division 06 - Wood, Plastics, Composites
• 06 00 00 - Wood, Plastics, Composites
• 06 10 00 - Rough Carpentry
• 06 20 00 - Finish Carpentry
• 06 30 00 - Unassigned
• 06 40 00 - Architectural Woodwork
• 06 50 00 - Structural Plastics
• 06 60 00 - Plastic Fabrications
• 06 70 00 - Structural Composites
• 06 80 00 - Composite Fabrications
• 06 90 00 - Unassigned

Division 07 - Thermal and Moisture Protection
• 07 00 00 - Thermal and Moisture Protection
• 07 10 00 - Dampproofing and Waterproofing
• 07 20 00 - Thermal Protection
• 07 25 00 - Weather Barriers
• 07 30 00 - Steep Slope Roofing
• 07 40 00 - Roofing and Siding Panels
• 07 50 00 - Membrane Roofing
• 07 60 00 - Flashing and Sheet Metal
• 07 70 00 - Roof and Wall Specialties and Accessories
• 07 80 00 - Fire and Smoke Protection
• 07 90 00 - Joint Protection

Division 08 - Openings
• 08 00 00 - Openings
• 08 10 00 - Doors and Frames
• 08 20 00 - Unassigned
• 08 30 00 - Specialty Doors and Frames
• 08 40 00 - Entrances, Storefronts, and Curtain Walls
• 08 50 00 - Windows
• 08 60 00 - Roof Windows and Skylights
• 08 70 00 - Hardware
• 08 80 00 - Glazing
• 08 90 00 - Louvers and Vents

Division 09 - Finishes
• 09 00 00 - Finishes
• 09 10 00 - Unassigned
• 09 20 00 - Plaster and Gypsum Board
• 09 30 00 - Tiling
• 09 40 00 - Unassigned
• 09 50 00 - Ceilings
• 09 60 00 - Floorings
• 09 70 00 - Wall Finishes
• 09 80 00 - Acoustic Treatment
• 09 90 00 - Painting and Coating

Division 10 - Specialties
• 10 00 00 - Specialties
• 10 10 00 - Information Specialties
• 10 20 00 - Interior Specialties
• 10 30 00 - Fireplaces and Stoves
• 10 40 00 - Safety Specialties
• 10 50 00 - Storage Specialties
• 10 60 00 - Unassigned
• 10 70 00 - Exterior Specialties
• 10 80 00 - Other Specialties
• 10 90 00 - Unassigned

Division 11 - Equipment
• 11 00 00 - Equipment
• 11 10 00 - Vehicle and Pedestrian Equipment
• 11 15 00 - Security, Detention, and Banking Equipment
• 11 20 00 - Commercial Equipment
• 11 30 00 - Residential Equipment
• 11 40 00 - Foodservice Equipment
• 11 50 00 - Educational and Scientific Equipment
• 11 60 00 - Entertainment Equipment
• 11 65 00 - Athletic and Recreational Equipment
• 11 70 00 - Healthcare Equipment
• 11 80 00 - Collection and Disposal Equipment
• 11 90 00 - Other Equipment

Division 12 - Furnishings
• 12 00 00 - Furnishings
• 12 10 00 - Art
• 12 20 00 - Window Treatments
• 12 30 00 - Casework
• 12 40 00 - Furnishings and Accessories
• 12 50 00 - Furniture
• 12 60 00 - Multiple Seating
• 12 70 00 - Unassigned
• 12 80 00 - Unassigned
• 12 90 00 - Other Furnishings

Division 13 - Special Construction
• 13 00 00 - Special Construction
• 13 10 00 - Special Facility Components
• 13 20 00 - Special Purpose Rooms
• 13 30 00 - Special Structures
• 13 40 00 - Integrated Construction
• 13 50 00 - Special Instrumentation
• 13 60 00 - Unassigned
• 13 70 00 - Unassigned
• 13 80 00 - Unassigned
• 13 90 00 - Unassigned

Division 14 - Conveying Equipment
• 14 00 00 - Conveying Equipment
• 14 10 00 - Dumbwaiters
• 14 20 00 - Elevators
• 14 30 00 - Escalators and Moving Walks
• 14 40 00 - Lifts
• 14 50 00 - Unassigned
• 14 60 00 - Unassigned
• 14 70 00 - Turntables
• 14 80 00 - Scaffolding
• 14 90 00 - Other Conveying Equipment

Division 21 - Fire Suppression
• 21 00 00 - Fire Suppression
• 21 10 00 - Water-Based Fire-Suppression Systems
• 21 20 00 - Fire-Extinguishing Systems
• 21 30 00 - Fire Pumps
• 21 40 00 - Fire Suppression Water Storage
• 21 50 00 - Unassigned
• 21 60 00 - Unassigned
• 21 70 00 - Unassigned
• 21 80 00 - Unassigned
• 21 90 00 - Unassigned

Division 22 - Plumbing
• 22 00 00 - Plumbing
• 22 10 00 - Plumbing Piping
• 22 20 00 - Unassigned
• 22 30 00 - Plumbing Equipment
• 22 40 00 - Plumbing Fixtures
• 22 50 00 - Pool and Fountain Plumbing Systems
• 22 60 00 - Gas and Vacuum Systems for Laboratory and Healthcare Facilities
• 22 70 00 - Unassigned
• 22 80 00 - Unassigned
• 22 90 00 - Unassigned

Division 23 - Heating, Ventilating, and Air Conditioning (HVAC)
• 23 00 00 - Heating, Ventilating, and Air Conditioning (HVAC)
• 23 10 00 - Facility Fuel Systems
• 23 20 00 - HVAC Piping and Pumps
• 23 30 00 - HVAC Air Distribution
• 23 40 00 - HVAC Air Cleaning Devices
• 23 50 00 - Central Heating Equipment
• 23 60 00 - Central Cooling Equipment
• 23 70 00 - Central HVAC Equipment
• 23 80 00 - Decentralized HVAC Equipment
• 23 90 00 - Unassigned

Division 25 - Integrated Automation
• 25 00 00 - Integrated Automation
• 25 10 00 - Integrated Automation Network Equipment
• 25 20 00 - Unassigned
• 25 30 00 - Integrated Automation Instrumentation and Terminal Devices
• 25 40 00 - Unassigned
• 25 50 00 - Integrated Automation Facility Controls
• 25 60 00 - Unassigned
• 25 70 00 - Unassigned
• 25 80 00 - Unassigned
• 25 90 00 - Integrated Automation Control Sequences

Division 26 - Electrical
• 26 00 00 - Electrical
• 26 10 00 - Medium-Voltage Electrical Distribution
• 26 20 00 - Low-Voltage Electrical Transmission
• 26 30 00 - Facility Electrical Power Generating and Storing Equipment
• 26 40 00 - Electrical and Cathodic Protection
• 26 50 00 - Lighting
• 26 60 00 - Unassigned
• 26 70 00 - Unassigned
• 26 80 00 - Unassigned
• 26 90 00 - Unassigned

Division 27 - Communications
• 27 00 00 - Communications
• 27 10 00 - Structured Cabling
• 27 20 00 - Data Communications
• 27 30 00 - Voice Communications
• 27 40 00 - Audio-Video Communications
• 27 50 00 - Distributed Communications and Monitoring Systems
• 27 60 00 - Unassigned
• 27 70 00 - Unassigned
• 27 80 00 - Unassigned
• 27 90 00 - Unassigned

Division 28 - Electronic Safety and Security
• 28 00 00 - Electronic Safety and Security
• 28 10 00 - Electronic Access Control and Intrusion Detection
• 28 20 00 - Electronic Surveillance
• 28 30 00 - Electronic Detection and Alarm
• 28 40 00 - Electronic Monitoring and Control
• 28 50 00 - Unassigned
• 28 60 00 - Unassigned
• 28 70 00 - Unassigned
• 28 80 00 - Unassigned
• 28 90 00 - Unassigned

Division 31 - Earthwork
• 31 00 00 - Earthwork
• 31 10 00 - Site Clearing
• 31 20 00 - Earth Moving
• 31 30 00 - Earthwork Methods
• 31 40 00 - Shoring and Underpinning
• 31 50 00 - Excavation Support and Protection
• 31 60 00 - Special Foundations and Load-Bearing Elements
• 31 70 00 - Tunneling and Mining
• 31 80 00 - Unassigned
• 31 90 00 - Unassigned

Division 32 - Exterior Improvements
• 32 00 00 - Exterior Improvements
• 32 10 00 - Bases, Ballasts, and Paving
• 32 20 00 - Unassigned
• 32 30 00 - Site Improvements
• 32 40 00 - Unassigned
• 32 50 00 - Unassigned
• 32 60 00 - Unassigned
• 32 70 00 - Wetlands
• 32 80 00 - Irrigation
• 32 90 00 - Planting

Division 33 - Utilities
• 33 00 00 - Utilities
• 33 10 00 - Water Utilities
• 33 20 00 - Wells
• 33 30 00 - Sanitary Sewerage Utilities
• 33 40 00 - Storm Drainage Utilities
• 33 50 00 - Fuel Distribution Utilities
• 33 60 00 - Hydronic and Steam Energy Utilities
• 33 70 00 - Electrical Utilities
• 33 80 00 - Communications Utilities
• 33 90 00 - Unassigned

Division 34 - Transportation
• 34 00 00 - Transportation
• 34 10 00 - Guideways/Railways
• 34 20 00 - Traction Power
• 34 30 00 - Unassigned
• 34 40 00 - Transportation Signaling and Control Equipment
• 34 50 00 - Transportation Fare Collection Equipment
• 34 60 00 - Unassigned
• 34 70 00 - Transportation Construction and Equipment
• 34 80 00 - Bridges
• 34 90 00 - Unassigned

Division 35 - Waterway and Marine Construction
• 35 00 00 - Waterway and Marine Construction
• 35 10 00 - Waterway and Marine Signaling and Control Equipment
• 35 20 00 - Waterway and Marine Construction and Equipment
• 35 30 00 - Coastal Construction
• 35 40 00 - Waterway Construction and Equipment
• 35 50 00 - Marine Construction and Equipment
• 35 60 00 - Unassigned
• 35 70 00 - Dam Construction and Equipment
• 35 80 00 - Unassigned
• 35 90 00 - Unassigned

Division 40 - Process Integration
• 40 00 00 - Process Integration
• 40 10 00 - Gas and Vapor Process Piping
• 40 20 00 - Liquids Process Piping
• 40 30 00 - Solid and Mixed Materials Piping and Chutes
• 40 40 00 - Process Piping and Equipment Protection
• 40 50 00 - Unassigned
• 40 60 00 - Unassigned
• 40 70 00 - Unassigned
• 40 80 00 - Commissioning of Process Systems
• 40 90 00 - Instrumentation and Control for Process Systems

Division 41 - Material Processing and Handling Equipment
• 41 00 00 - Material Processing and Handling Equipment
• 41 10 00 - Bulk Material Processing Equipment
• 41 20 00 - Piece Material Handling Equipment
• 41 30 00 - Manufacturing Equipment
• 41 40 00 - Container Processing and Packaging
• 41 50 00 - Material Storage
• 41 60 00 - Mobile Plant Equipment
• 41 70 00 - Unassigned
• 41 80 00 - Unassigned
• 41 90 00 - Unassigned

Division 42 - Process Heating, Cooling, and Drying Equipment
• 42 00 00 - Process Heating, Cooling, and Drying Equipment
• 42 10 00 - Process Heating Equipment
• 42 20 00 - Process Cooling Equipment
• 42 30 00 - Process Drying Equipment
• 42 40 00 - Unassigned
• 42 50 00 - Unassigned
• 42 60 00 - Unassigned
• 42 70 00 - Unassigned
• 42 80 00 - Unassigned
• 42 90 00 - Unassigned

Division 43 - Process Gas and Liquid Handling, Purification and Storage Equipment
• 43 00 00 - Process Gas and Liquid Handling, Purification and Storage Equipment
• 43 10 00 - Gas Handling Equipment
• 43 20 00 - Liquid Handling Equipment
• 43 30 00 - Gas and Liquid Purification Equipment
• 43 40 00 - Gas and Liquid Storage
• 43 50 00 - Unassigned
• 43 60 00 - Unassigned
• 43 70 00 - Unassigned
• 43 80 00 - Unassigned
• 43 90 00 - Unassigned

Division 44 - Pollution and Waste Control Equipment
• 44 00 00 - Pollution and Waste Control Equipment
• 44 10 00 - Air Pollution Control
• 44 20 00 - Noise Pollution Control
• 44 30 00 - Odor Control
• 44 40 00 - Water Pollution Control Equipment
• 44 50 00 - Solid Waste Control and Reuse
• 44 60 00 - Waste Thermal Processing Equipment
• 44 70 00 - Unassigned
• 44 80 00 - Unassigned
• 44 90 00 - Unassigned

Division 45 - Industry-Specific Manufacturing Equipment
• 45 00 00 - Industry-Specific Manufacturing Equipment

Division 46 - Water and Wastewater Equipment
• 46 00 00 - Water and Wastewater Equipment
• 46 10 00 - Unassigned
• 46 20 00 - Water and Wastewater Preliminary Treatment Equipment
• 46 30 00 - Water and Wastewater Chemical Feed Equipment
• 46 40 00 - Water and Wastewater Clarification and Mixing Equipment
• 46 50 00 - Water and Wastewater Secondary Treatment Equipment
• 46 60 00 - Water and Wastewater Advanced Treatment Equipment
• 46 70 00 - Water and Wastewater Residuals Handling and Treatment
• 46 80 00 - Unassigned
• 46 90 00 - Unassigned

Division 48 - Electrical Power Generation
• 48 00 00 - Electrical Power Generation
• 48 10 00 - Electrical Power Generation Equipment
• 48 20 00 - Unassigned
• 48 30 00 - Unassigned
• 48 40 00 - Unassigned
• 48 50 00 - Unassigned
• 48 60 00 - Unassigned
• 48 70 00 - Electrical Power Generation Testing
• 48 80 00 - Unassigned
• 48 90 00 - Unassigned