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Enter flow rate (CFM) and duct diameter (inch) to begin sizing

 

QUICK-GUIDE

  1. Select the duct material from the drop-down list (most duct sizing tools are typically based on galvanised steel ducting by default)

  2. Enter the air flowrate in cubic feet per minute (CFM)

  3. Enter an internal duct size in inches (this must be limited to a maximum aspect ratio of 5:1 for the results to be valid)

  4. The resulting velocity and pressure drop per unit length are displayed in the blue box.

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The calcuPIPE website is intended to provide design assistance only. The creator of calcuPIPE takes no responsibility for the accuracy of the results. Before using the results, the user should verify against another reliable method. Refer to the terms of use for more information.

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