... quality, low price 3.noiseless and power saving Centrifugal Industrial Blower Fan with IEC Connector We are one of the biggest ... and professinal manufacturer of ventilation products including FAN, SPEED CONTROLLER, CARBON FILTER, AIR DIFFUSERS, PIPE FITTING, ETC ... and low weight. 2. Structural characteristics housingThe housing of fan consists of air inlet cover and air outlet cover. It ...