Saw this rating as I was comparing different cooling fans. I don’t understand this definition at all. Millimeters of Water Column is a low range metric pressure unit derived from the hydrostatic pressure of 1mm head of water at 4 degC. 1 millimeter of water gauge equals 9.80665 pascals.
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static pressure of a fan, in other words how well can it push air through let’s say a radiator
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