Max be 239CFM That's very close to my Big boy deltas I use to cool my radiator for my OC i7 3930k~ 4.7ghz.....
Whats the Air Pressure? My delta at 252CFM is: 1.412 IN H2O 35.877 mmH2O
What do you mean by "1.412 IN H2O 35.877 mmH2O". I'm sure you make sense. It's just that I know the lingo.
1.412 Iches of H2O
Or
35.877 milmeters H2O
Often called a 'head' of water
It is the pressure required to support a water column of the specified height. It is equivalent to 9.80665 Pa, using the equation:
P = ρ·g·h/1000
or TL/DR how hard the air coming from that fan is pushing