... extra low operating cost low noise, cooling fresh air, purifier Industrial Portable Cooler (18000m3/h): ModelKLP-BP18Power supply(V/Hz)220 ... (40ft HQ)40sets(2)The main features of 18000m3/h Industrial Air Cooler:1.Large products range from 8700-15000 m3 ... fan motor, keeps your place filled with fresh cool air : Industrial Portable Cooler (18000m3/h)