Fan filter unit 1)Low vibration and noise 2)hepa filter inside type ... EBM DC fan has some features that are energy-saving, computer control, stable operation, low noise, digital control etc. In the ... more,actual operation cost is low.You can use with computer control nearly 8,000 sets on fan operation, speed, ... , Pre filter, Pressure gaugeWeight(KG)22242832 H14 HEPA Fan Filter Unit for clean room