Structural requirements of a mechanical system.
Municipal Code of Chicago § 18-28-403.2
in effect18-28-403.2 Structural requirements of a mechanical system.
Any system which conveys ventilation air shall be designed and installed in accordance with Article 6, Duct Systems.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2686900Fetched: 10/24/2026
