Damper Sizing Calculator

Input Parameters

Imperial (°F, BTU, ft)SI (°C, kW, m)

Airflow (CFM)

Velocity (FPM)

Damper Type

Damper Area sq ft

9" x 9"

Damper Size

Pressure Drop in WG

Damper Area0.5 sq ft(100%)

Pressure Drop0.1 in WG(10%)

Formula:

A = \frac{CFM}{V}

Calculation:

A = \frac{1000}{2000}

Result:

0.50 \text{ sq ft}