504.8.5 Length identification.
MC § 504.8.5
Where the equivalent length of the exhaust duct exceeds 35 feet (10 668 mm) to the outlet terminal, common exhaust, or power ventilator, the equivalent length of the exhaust duct shall be identified on a permanent label or tag. The label or tag shall be located within 6 feet (1828.8 mm) of the exhaust duct connection.













