Listed by Underwriters Laboratories for Class 1, Group C and D applications, Wiring complies with National Electrical Code, Article 501-4 for Class 1, Division 1 and 2, Specially designed compressor with all electrical components fully enclosed, to prevent an electrical spark from accidentally igniting any flammable vapors present in the ambient environment surrounding the refrigerator, Static condenser mounted to the back of the cabinet, free of electric condenser fan motor to eliminate sources of accidental ignition of flammable vapors, Adjustable mechanical thermostat, fully enclosed to prevent ignition of flammable vapors