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Flue dampers.

NYC Admin. Code § 27-808
in effect
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§ 27-808 Flue dampers. Dampers in flues shall be constructed so that they cannot completely cut off the passage of flue gases at any time. Tight-closing dampers may be installed with approved automatic draft and combustion controls.
Source: City of New York, Charter, Administrative Code and Rules (American Legal Publishing XML export, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/newyorkcity/latest/NYCadmin/0-0-0-52153Fetched: 10/24/2026

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27-808 | Corpus