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- Division 27 Zipped (235 KB)
- Section #27 05 14 – Communication Cables – Inside Buildings
- Section #27 05 28 – Pathways for Communications Systems
- Section #27 10 05 – Structured Cabling for Communications Systems
- Section #27 11 20 – Terminals and Connectors for Communications Conductors – Entrance Facility
- Section #27 20 00 – Data Communications
- Section #27 31 00 – Voice Communications Switching and Routing Equipment
- Section #27 51 16 – Public Address and Mass Notification Systems
- Section #27 51 23 – Intercommunications and Program Systems
- Section #27 51 26 – Assistive Listening Systems
- Section #27 51 26.01 – Enhanced Classroom Listening Systems