Key Specifications/Special Features: Reinforced fiberglass plastic casing, durable and elegant outline, vibration and corrosion resistance Heat transfer: made of rifled copper tube and aluminum plate fin, high efficiency Specially finished copper tubes for corrosion resistance Reliable and durable fans of high efficiency Using world-famous expansion valve to match the device for excellent cooling efficiency of the system Operated by electric circuit of mini computer of high efficiency, including temperature digital indicator, malfunction inspector and alarm system Outlet filter installed directly in the bus airway, easy and convenient to install and maintain, no occupation of interior space Cooling capacity: 22kW (75085Btu/h) Applicable for 8.5 to 9m bus Standard equipment: control panel and DKS-22 double-compressor assembly Optional equipment: digital control panel, Bock FKX40-465K compressor and Bitzer 4TFCY compressor Minimun order: 1 x 20-foot container