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Larger openings.

Municipal Code of Chicago § 14X-12-1202.6.2
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14X-12-1202.6.2 Larger openings. Openings greater than 1 square foot (0.1 m2) in area must be closed and secured, using secure doors, glazed windows, polycarbonate boarding or commercial-quality steel security panels, or filled with like-kind material as the surrounding wall to prevent entry by unauthorized persons. Plywood is prohibited. Exception: For the first six months that a building or commercial storefront is vacant, openings greater than 1 square foot (0.1 m2 ) may be secured with plywood. (Amend Coun. J. 6-12-24, p. 13412, Art. I, § 2)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2676439Fetched: 10/24/2026

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14X-12-1202.6.2 | Corpus