air flow:50000CMH, size:1900*1900*1820mm,stainless steel, ... 380 V Noise ≤84dB Current 15.4A Frequency 50Hz Fan Type centrifugal flow Motor Type 3-phrase,1-speed ... ,durable, anti-oxidant, fast heat dissipation, long using life. Fan: galvanized sheet, low noise. Centrifugal Ventilator: The scroll is ... plat fixed to the side plates by means of "electric spot welding". centrifugal air cooler ,50000CMH