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NYC Mechanical Code

§ 502.21 — § 502.21

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What is NYC MC § 502.21?

Quick Answer

This section specifies the material requirements for domestic kitchen exhaust systems in Group R occupancies, mandating the use of No. 18 Gage galvanized sheet metal. It also allows for alternative ductwork that meets specific criteria for independent apartment exhaust systems. Applies to property owners managing residential buildings.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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502.21 Domestic kitchen exhaust systems.

MC § 502.21

In all Group R occupancies, a minimum of No. 18 Gage galvanized sheet metal shall be used, except that ductwork that complies with Section 603.6.1.2 shall be permitted for independent apartment exhaust systems providing general exhaust ventilation of kitchen and toilet areas.

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