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Flexible air connectors.

Municipal Code of Chicago § 18-28-603.5.2
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18-28-603.5.2 Flexible air connectors. Flexible air connectors, both metallic and nonmetallic, shall be tested in accordance with UL 181 Such connectors shall be listed and labeled as Class 0 or Class I flexible air connectors and shall be installed in accordance with the provisions of this Chapter 18-28. (Amend Coun. J. 11-9-16, p. 36266, § 36)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2687589Fetched: 10/24/2026

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18-28-603.5.2 | Corpus