Air flow calculator
For a quick duct size check, why not try our calculator?
Choose the duct shape, then use the sliders to find the fabric duct size or air volume you need. If the velocity selector is blue, you’ve arrived at a comfortable fabric duct selection. Green is generally within spec for Prihoda fabric ducts. If the selector turns red, your air velocity is too high! Lower the air volume or widen the ducts to try again.
Or download the mobile app below