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// CODE SNIPPET

402.4 Outdoor Air Intake Protection

2018 Uniform Mechanical Code of Nevada > 4 Ventilation Air > 402.0 Ventilation Air > 402.4 Outdoor Air Intake Protection

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Required outdoor-air intakes shall be covered with a screen having not less than ¹/₄ of an inch (6.4 mm) openings, and shall have not more than ¹/₂ of an inch (12.7 mm) openings.

402.4.1 Weather Protections

Outdoor air intakes that are part of the mechanical ventilation system shall be designed to manage rain entrainment, to prevent rain intrusion, and manage water from snow in accordance with ASHRAE 62.1.

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