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RECTANGULAR

DUCT

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 litres/second (can change to cubic metres/second by use of drop-down to the right of the input)

  3. Enter an internal duct size (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.

Select:

 

SI Units
US Units
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The calcuDUCT website is intended to provide design assistance only. The creator of calcuDUCT 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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