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Apprentice answer

Why can a normal transfer louver fail an architectural light-leak check

3rd YearRoof Curbs, Louvers & Exterior AirStandard Correction

Airflow may be correct but the louver style may not meet the room privacy/acoustic need. Use the approved sight-proof/acoustic transfer louver type.

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Plain-English answer

A straight-blade transfer louver can move air but still allow line-of-sight light through the wall. In conference rooms, projector rooms, studios, or privacy spaces, that can be a finish rejection even if airflow is fine.

Confirm the architectural/acoustic requirement, net free area, and wall rating. The likely fix is a chevron, sight-proof, or acoustic transfer louver assembly that blocks line-of-sight while keeping the required air path.

Ask Foreman

The transfer louver at [location] passes light straight through into the room. Airflow may be okay, but it looks like the wrong blade style. Do you want a sight-proof/acoustic louver submittal checked?

Verify before acting

Use this as training guidance. Foreman direction, approved drawings, project specs, manufacturer instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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