§ 35.82. Exhaust ducts.
(a) Exhaust ducts shall be as short as possible. They shall terminate at a point where the discharge will least endanger health or property, and at such height above the sidewalks or passageways as to make it unlikely that lighted matches or other open flames might be dropped into the ducts or come in dangerous proximity to the discharge from the duct opening. All outlets shall be protected if located where fire or sparks might enter the exhaust ducts and set fire to the spraying or other equipment.
(b) Exhaust ducts shall be constructed so as to be easily inspected and cleaned.
(c) Ducts shall be constructed of noncombustible material.
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