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Strainer plates.

Municipal Code of Chicago § 18-29-304.2
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18-29-304.2 Strainer plates. All strainer plates on drain inlets shall be designed and installed so that all openings are not greater than 1/2 inch (12 mm) in least dimension.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2690780Fetched: 10/24/2026

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