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§ 18-28-401.5.1.7 — Damper

Municipal Code of Chicago (2026 S-74, current through Council Journal of June 17, 2026) · Municipal Code of Chicago § 18-28-401.5.1.7

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18-28-401.5.1.7 Damper.

The duct may be equipped either with a gravity type damper that permits air to flow in one direction only; or with an automatic damper that closes only when the fan serving the room is not running, or both.