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Form a Business

Duct joints.

Municipal Code of Chicago § 18-28-510.8.1
in effect
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18-28-510.8.1 Duct joints. Ducts shall be made tight with lap joints having a minimum lap of 1 inch (25 mm).
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2687479Fetched: 10/24/2026

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18-28-510.8.1 | Corpus