Louver Free Area vs Face Area

What's free area ratio for this louver? Size for specific face velocity to avoid noise and water penetration?

I'm checking louver free area vs face area at [location]. I found wall louver with horizontal blades, sizing for outdoor air intake. What's free area ratio for this louver? Size for specific face velocity to avoid noise and water penetration?

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Stop if

Hold point on louver free area vs face area: I have the location, photo, drawing/detail, and what I checked. Who should verify before this gets cut, drilled, covered, lifted, connected, or signed off?

Watch out

Don't size by face area alone. Don't ignore free area ratio. Don't assume all louvers have same free area percentage.

Check

room/grid/area
photo of condition
drawing/detail or submittal
what I already checked
what is blocking progress

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14118 louver free area vs face area roof curbs, louvers & exterior air yellow 2 what's free area ratio for this louver? size for specific face velocity to avoid noise and water penetration? i'm checking louver free area vs face area at [location]. i found wall louver with horizontal blades, sizing for outdoor air intake. what's free area ratio for this louver? size for specific face velocity to avoid noise and water penetration? louver free area, louver sizing, face area vs free area louver free area, face area, free area ratio, louver performance louver size, louver opening, outside air grille, wall louver

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