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Duct Flow Calculators

Volume Unit Converter

A simple volume unit converter to convert air flow volumes from one unit to another.

Equivalent Size Calculator

Calculate the equivalent size of spiral ducting when you have only been given the rectangular duct dimension (it works the other way also)

System Pressure Calculator

The System Pressure Calculator helps you work out the resistance in pascals that elements such as spiral duct, bends, duct heaters etc. place on a ventilation duct run.

Pipe Diameter Calculator

Our Pipe Diameter Calculator helps you work out the correct pipe diameter depending on the volume or velocity of air.

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