Presenting the 5.6 cu. ft. explosion proof refrigerator freezer manufactured by Thermo Scientific. Model 3557-4 is engineered to prevent triggering an explosion inside or outside the unit. The thermostat and compressor components are isolated within a vapor-proof enclosure and electrical connections are hardwired to prevent sparking and accidental disconnection. The spark free interior and exteriors also reduce the risk of explosion. With a 1 to 12 degree C temperature range in the refrigerator section and -20 to -12 C in the freezer section, this 120 volt combination unit meets OSHA and National Fire Protection Association safety requirements. Suitable for use in Class I, Division I Group C and D hazardous environments.