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GB 51309-2018 第5.2.5条 Technical Standard for Fire Emergency Lighting and Evacuation Indication Systems

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GB 51309-2018 第5.2.5条

| **** | Emergency lighting (e.g., corridors, stairwells) shall be installed at a height of **not less than** 2.2 m (ceiling-mounted or wall-mounted); installation inside hotel suspended ceilings or concealed locations is **strictly prohibited**. |

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