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918.6 Outdoor Opening Protection
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Outdoor air intake openings shall be protected in accordance with Section 401.5.
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918.6 Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment, Outdoor Opening Protection
Outdoor air intake openings shall be protected in accordance with Section 401.5 ...
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401.5 Ventilation, Intake Opening Protection
Air intake openings that terminate outdoors shall be protected with corrosion-resistant screens, louvers or grilles. Openings in louvers, grilles ...