Qingzhou Yongsheng Machinery Co.,Ltd is one of the professional China 660mm small exhaust fan manufacturers and suppliers,Website:://.qzys-exhaustfan.com, welcome to wholesale low price 660mm small exhaust fan from our factory.Features To adjust the market request , we also make small fan for the customization. The small fan all adopt the good row material just like the big fan. This type fan have full stainless steel and shutter stainless steel material , the blade aluminum material, very strong and long service life. The small fan can used together with the big fan, install in small place. Specifications Model       Blade diameter        MM Motor power        KW Wind      m³/h Voltage        V Shape size      mm FJ-660 500 0.37 10850 380 678x678x400