Comment by monster_truck

You must not be familiar with the iPPC 3000's. A single 120mm fan moves more air than the exhaust fan in your bathroom. The 140mm encroaches on kitchen fan territory (158cfm). At static pressures slightly higher than what either of those typically has, 24/7, for years.

They're not toys. If you stick your finger into one of these it does not peacefully come to a halt, the tip of your finger gets buzzsawed off and then it stops about halfway through your fingernail.

(The i stands for industrial)