Residential, Commercial, Industrial and Institutional Plumbing, Heating and Cooling Contractors.

• See also:
• Masterformat 2004
• 13 31 00 - Fabric Structures
• 13 31 23 - Tensioned Fabric Structures
• 13 34 00 - Fabricated Engineered Structures
• 13 34 13 - Glazed Structures
• 13 34 16 - Grandstands and Bleachers
• 13 34 19 - Metal Building Systems
• 13 34 23 - Fabricated Structures
• 13 34 56 - Observatories
• 13 44 00 - Modular Mezzanines
• 26 10 00 - MEDIUM-VOLTAGE ELECTRICAL DISTRIBUTION
• 26 13 00 - Medium-Voltage Switchgear
• 26 18 00 - Medium-Voltage Circuit Protection Devices
• 26 18 13 - Medium-Voltage Cutouts
• 26 18 16 - Medium-Voltage Fuses
• 26 18 19 - Medium-Voltage Lightning Arresters
• 26 18 23 - Medium-Voltage Surge Arresters
• 26 18 26 - Medium-Voltage Reclosers
• 26 20 00 - LOW-VOLTAGE ELECTRICAL TRANSMISSION
• 33 71 00 - Electrical Utility Transmission and Distribution
• 33 77 00 - Medium-Voltage Utility Switchgear and Protection Devices
• 33 77 33 - Medium-Voltage Utility Cutouts
• 33 77 36 - Medium-Voltage Utility Fuses
• 33 77 39 - Medium-Voltage Utility Surge Arresters
• 33 77 53 - Medium-Voltage Utility Reclosers
• Masterformat 1995
• 13120 - Pre-Engineered Structures
• 13124 - Portable & Mobile Buildings
• 16300 - Transmission and Distribution
• 16330 - Medium-Voltage Switching and Protection
• 16400 - Low-Voltage Distribution