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Can a ceiling plenum be used for smoke extraction, Will such plenums fall under the category of exhaust air plenums as per NFPA 90A (2015).

Question asked by Jismi Mohammed Shahul Hameed on Oct 18, 2016

Can a ceiling plenum be used for smoke extraction, Will such plenums fall under the category of exhaust air plenums as per NFPA 90A (2015).

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