Air unit cooler, it is also called as evaporator, it is made of copper tube and aluminium fin. Outside is steel cover or Stainless steel cover. And install with axial fan, air unit cooler mainly use in show case, and various storage cold room. The capacity is from 0.5KW to 85KW. Unit Air Cooler divide in 3 type according to different temperature, DL model for 0 degree, DD for -18 degree, DJ model for -25degree.