Termination point.
Municipal Code of Chicago § 18-28-502.6.3.6
in effect18-28-502.6.3.6 Termination point.
The termination point for exhaust ducts discharging to the out-of-doors shall be located with the following minimum distances.
1. For ducts conveying explosive or flammable vapors, fumes or dusts: 30 feet (9144 mm) from the property line; 10 feet (3048 mm) from openings into the building; 6 feet (18829 mm) from exterior walls and roofs; 30 feet (9144 mm) from combustible walls and openings into the building which are in the direction of the exhaust discharge; 10 feet (3048 mm) above adjoining grade.
2. For environmental air duct exhaust: 3 feet (914 mm) from the property line; 3 feet (914 mm) from openings into the building.
3. For environmental air duct exhaust 3 feet (914 mm) from the property line; 3 feet (914 mm) from openings into the building.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2687063Fetched: 10/24/2026