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Ventilation air inlets ≥ 2 ft. above grade or roof deck in Climate Zones 1-3 or ≥ 4 ft. above grade or roof deck in Climate Zones 4-8 and not obstructed
Ventilation air inlets located ≥10 ft. of stretched-string distance from known contamination sources such as stack, vent, exhaust hood, or vehicle exhaust
Ventilation inlet is not near any exhaust outlets/contamination sources and is at least 2 ft. above the roof deck
Ventilation inlet is too close to exhaust outlets and does not extend at least 2 ft. above the roof deck