Air Grille Selection

Calculates the pressure losses occurring in single- and double-deflection air grilles, with or without dampers, used in ventilation systems.

System Component

Damper Position

Airflow Rate

Width / Height (W/H) (mm)

Recommended Air Velocities

Comfort Applications

Industrial Applications

Supply Grille

1.5 – 3 m/s

3 – 4 m/s

Return / Exhaust Grille

2 – 3 m/s

4 – 8 m/s

Outdoor Air Louvers

3 – 4 m/s

4 – 6 m/s