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Municipal Code of Chicago § 18-28-918.9.4.1
in effect
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18-28-918.9.4.1. A furnace plenum supplied as a part of a furnace shall be installed in accordance with the manufacturer's instructions.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2688382Fetched: 10/24/2026

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