23 34 00 HVAC Fans 26 24 00 Switchboards and Panelboards 26 26 00 Power Distribution Units 26 27 00 Low-Voltage Distribution Equipment 26 28 00 Low-Voltage Circuit Protective Devices 27 16 00 Communications Connecting Cords, Devices and Adapters 27 32 00 Voice Communications Terminal Equipment 32 10 00 Bases, Ballasts and Paving 50 59 00 Construction Material Delivery/Hauling 50 61 00 Construction Material Supplier 50 63 00 Equipment/Tool Sales

26 00 00 Electrical 26 09 00 Instrumentation and Control for Electrical Systems 26 20 00 Low-Voltage Electrical Transmission 26 26 00 Power Distribution Units 26 50 00 Lighting 28 00 00 Electronic Safety and Security 33 71 00 Electrical Utility Transmission and Distribution 48 00 00 Electrical Power Generation

11 52 00 Audio-Visual Equipment 11 61 00 Broadcast, Theater and Stage Equipment 25 50 00 Integrated Automation Facility Controls 26 10 00 Medium-Voltage Electrical Distribution 26 24 00 Switchboards and Panelboards 26 26 00 Power Distribution Units 26 56 00 Exterior Lighting 27 10 00 Structured Cabling 27 13 00 Communications Backbone Cabling 27 15 00 Communications Horizontal Cabling 27 41 00 Audio-Video Systems 28 00 00 Electronic Safety and Security 28 13 00 Access Control 28 23 00 Video Surveillance 28 31 00 Fire Detection and Alarm 28 39 00 Mass Notification Systems 40 94 00 Digital Process Controllers