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Transition ducts.

Municipal Code of Chicago § 18-28-504.9.3
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18-28-504.9.3 Transition ducts. Transition ducts used to connect the dryer to the exhaust duct system shall be a single length that is listed and labeled in accordance with UL 2158A. Transition ducts shall not be greater than 8 feet (2438 mm) in length and shall not be concealed within construction. (Amend Coun. J. 9-14-21, p. 35949, Art. V, § 11)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2694655Fetched: 10/24/2026

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18-28-504.9.3 | Corpus