... top-quality pulley 4CE 2012 HOT!!! Box Fans Description 1.The fan blade is stainless steel, big air volume ... and increase own emphasis efficiently; France imported axletree(bearings), high intensity, low noise, long service life. 4. ... reduce noise, enhance stability, extend service life.36’’Fan Air capacity20800m3/HrSize1000×1000×450mmNoise<64DBPower0.4KWVoltage380VElectric Current1.6AWeight66KG ...