Destription: LF Series Luxury Rectangular Exhaust Fan has the features of lower noise, low energy saving, large wind flow, far wind supply and easy to install, etc. It is an ideal ventilation equipment for summer cooling and ventilation in warehouse, office, greenhouse, animal shelter, etc. The temperature of transmitted air must be below 70°C, the relative humidity must be below 90%, dust and solid impurities containing index is below 100mg/m3. Technical Parameter Model Voltage(V)Power(kw)Revolution(rpm)Wind Volume(M3/h)NoisedB(A)Wiegh(kg)Product Size(mm)9#2200.37450280005942900X400X90010#2200.554503250060521060X400X106012#2200.754503750063741220X400X122013#2201.14504450065871380X400X1380Fuctional characteristics: One set of LFrectangularexhaustfan with shuttter exchange the air in 700 m3 (the area of the workshop is about 10000 m2)indoor with outside 44500/700m3=63.5 times, result as there is one set of household fan blowing directly in every location of the indoor. The traditional workshop just use indoor cirtilation, indoor air exchange with outdoor is less than 10 times/hour. Packing: carton box Material: Galvanized steel basing and shutter, 100% copper motor, aluminum blades. The voltage, frequency, materials of basing and blades could be customized.