💨 Inputs

Overrides dropdown if using custom
Used to check diffuser spacing (150–200 ft²/diffuser typical)

📊 Results

Diffusers Required
CFM per Diffuser
ft² per Diffuser
Approx Spacing (ft)
Standard Size Capacities

📚 Diffuser Sizing Guidelines

Space Typeft²/DiffuserCFM/Diffuser
Open office150–200150–250
Private office / classroom100–150100–200
Retail / open plan200–300200–400
Corridor / low-load200–40050–150
Perimeter (heating)size for 550–700 FPM NC-30
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