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Reduction of Flue Size

NYC Mechanical Code § MC 808
in effect
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Section MC 808: Reduction of Flue Size 808.1 Reduction of flue size. Conversion from one fuel to another or the use of an existing chimney to service a fireplace or wood-burning appliance may require a flue size change for proper operation. This may be done if the redesigned flue meets the criteria for the fuel and chimney type to be used as set forth in this chapter.
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/0-0-0-195104Fetched: 10/24/2026

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MC 808 | Corpus