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17/30362102 DC
M00003050
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04 September 2017 BS ISO 21927-4. Smoke and heat control systems. Part 4. Natural smoke and heat exhaust ventilators, design, requirements and installation
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Thermal resistance, Conformity, Control systems, Fire resistance, Fire-test classifications, Fire safety in buildings, Fire spread prevention, Smoke, Fire safety, Performance testing, Safety curtains, Performance, Smoke extraction (buildings), Heat, Fire barriers