Positive pressure means there is more intake airflow than exhaust. This causes excess air to be pushed out through the gaps in the case, helping to keep dust from entering where it shouldn’t. It’s ...

Fans in the WideBody TA350DC series have maximum air flow ratings of 77, 90 and 110 cfm. The 38 mm-wide air frame is designed to operate at static pressure as high as 0.55 inwg.