Fire rated ducts are HVAC components designed to resist fire spread for specified durations (30–120 minutes). Constructed from galvanized steel with fire-resistant insulation and intumescent linings or wraps.
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Used in commercial buildings, hospitals, and tunnels for smoke extraction and pressurization systems. Challenges include weight, installation cost, and leakage testing.
Nevertheless, passive fire protection ratings ensure compliance with building codes while maintaining essential airflow during emergencies.
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