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Manual dampers.

Municipal Code of Chicago § 18-28-803.5
in effect
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18-28-803.5 Manual dampers. Manual dampers shall not be installed in connectors except in chimney connectors serving solid fuel-burning appliances.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2687856Fetched: 10/24/2026

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18-28-803.5 | Corpus