EC180:B280~560
B-Flow series: Impellers are two-dimentional blade design, suitable for regular static pressure enviroment like data centers.
B-Max series: fan impellers are three-dimentional aluminummagnesium alloy blades made through a special twisting process, or high strength composit plastic blade made by onepiece injection mold. The design allows the fan to be used in equipment having high static pressure, such as AHU.