Thermo Scientific explosion proof refrigerator freezer combo 3551 is an ideal choice for safe storage in hazardous environments. Offering a total capacity of 10 cu. ft., this manual defrost unit provides 1 to 12 degree C temperature in the refrigerator section and -20 to -12 degree C temperature in the freezer section. The tough white exterior is spark free and reduce the risk of explosion. For maximum storage space, this unit has 3 adjustable refrigerator shelves plus 4 door shelves, and one freezer shelf which is fixed. Suitable for use in Class I, Division I Group C and D hazardous environments, this explosion proof combination unit is also UL listed and CSA certified.