truck refrigeration is special designed for refrigerated truck body to keep fresh,frozen and deep frozen ,powered by the engine of the vehicle, and it has great advantages in fuel saving, environmental and highly efficient. Product Details: 1,SF-450 Truck Refrigeraiton Units quality you can trust on, from the world leader. Proven technology, tried and tested by previous generations of market leading direct drive units. Reliable cooling capacity and airflow, that protect cargo quality under all conditions. 2,Easy to install, all units are extra flat and lightweight. Easy to operate, in-cab command and micro-processor control, proven over many years. 3,For all ambient temperatures, with specifically designed units for high or low ambient. For all vehicles, adapts to panel van or box insulation. For chilled or frozen applications, with a choice of refrigerant. Product Features Ultra-Slim Evaporator with huge air volume In-cab Digital Controller, with e-diagnostics Automatic and Manual Hot Gas Defrosting High pressure switch&Low pressure switch Oil Separator Refrigerant Reservoir CPR Regulator Liquid Injection valve Expansion Valve with MOP Product Parameters Model SF-450 Cooling Capacity 4500W/15000Btu(0 2500W Control Voltage DC 12V/24V Defrosting Hot gas defrost(Auto/Manual) Temperature Range -25 +30 Refrigerant & Volume R404A,1.4kg 5% Airflow Volume 1830m³/hr Model QP16 Displacement 163cc Condenser Type Parallel Flow Condenser Qty of Fans 2Pcs Dimensions 1148 475 388 mm Weight 35Kg Evaporator Type Inner Grooved Copper Tube and Fin Qty of Fans 2Pcs Dimensions 1016 635 230 mm Weight 17Kg Recommended Box Volume 20m 20 /30 (0) Optional function Heating and Electric standby