The Construction Specifications Institute (CSI) publishes the MasterFormat, which is the standard that is used most often for formatting construction specifications.
MasterFormat is the protected intellectual property of the Construction Specifications Institute so we cannot provide a fill list of numbers and titles. Unfortunately, CSI no longer makes the list available for free. You can purchase the MasterFormat list from CSI.
MasterFormat uses a three-part number (sometimes four-parts) for classifying construction products into categories. The first two numbers are Divisions, followed by 2 numbers for the Section, and then two more numbers for the sub-section. In some cases, you may also see a two number decimal for sections that need more specific breakdowns. The example below is for Custom Hollow Metal Doors and Frames, which is in Division 8 for Openings.
MasterFormat Divisions
MasterFormat was first released in 1975 and only had 16 Divisions until the new 50-Division MasterFormat 2004 was released in late 2004. Divisions that are not listed below are reserved for future use (including Division 49.)
- Division 00 - Procurement and Contracting Requirements
- Division 01 - General Requirements
- Division 02 - Existing Conditions
- Division 03 - Concrete
- Division 04 - Masonry
- Division 05 - Metals
- Division 06 - Wood, Plastics, and Composites
- Division 07 - Thermal and Moisture Protection
- Division 08 - Openings
- Division 09 - Finishes
- Division 10 - Specialties
- Division 11 - Equipment
- Division 12 - Furnishings
- Division 13 - Special Construction
- Division 14 - Conveying Equipment
- Division 20 - Mechanical Support
- Division 21 - Fire Suppression
- Division 22 - Plumbing
- Division 23 - Heating, Ventilating, and Air Conditioning (HVAC)
- Division 25 - Integrated Automation
- Division 26 - Electrical
- Division 27 - Communications
- Division 28 - Electronic Safety and Security
- Division 31 - Earthwork
- Division 32 - Exterior Improvements
- Division 33 - Utilities
- Division 34 - Transportation
- Division 35 - Waterway and Marine Construction
- Division 40 - Process Integration
- Division 41 - Material Processing and Handling Equipment
- Division 42 - Process Heating, Cooling, and Drying Equipment
- Division 43 - Process Gas and Liquid Handling, Purification and Storage Equipment
- Division 44 - Pollution and Waste Control Equipment
- Division 45 - Industry-Specific Manufacturing Equipment
- Division 46 - Water and Wastewater Equipment
- Division 48 - Electrical Power Generation
