1."Haier"brand motor which have been tested more than 360 hours by Hair laboratory2. International advanced power-saving technolog and automatically heat protected system3. light weight aluminum punch fan blades with large angle, big wind output and low noise.4. Outer frame is stainless steel or steel spraying available5. CADoptimized devised wind output:840-8700m3/hour.6.long life service more than 10 yearstypephraseratedvolatage Vfrequency Hzpower Wrationalspeed r/minwind capacitym3/hweight kgJLFD40-4singlephrase2205060140022808.5JLFS40-4threephrases3805060140022808.5JLFD50-4singlephrase220503501400570013JLFS50-4threephrases380503501400570013