Download File Duct Sizer.zip -

Appropriate width and height based on airflow (CFM) and air velocity.

Keep the aspect ratio (width-to-height) between 1:1 and 1:4 to prevent excessive noise and pressure drops. Why Proper Sizing Matters Download File Duct Sizer.zip

Input airflow and maximum velocity to determine size. Appropriate width and height based on airflow (CFM)