We have the Thermo Scientific flammable material storage freezer 3552-10A for safe, cold storage of volatile materials. With 20.6 cu. ft. capacity, this manual defrost unit offers a temperature range of -20 to -12 degree C and CFC-free insulation and coolant. The 120 volt unit has four permanently positioned wire shelves where built-in evaporators provide even cooling. Model 3552-10A features thermostat control located on the exterior of the cabinet to eliminate interaction with stored materials. Our freezers are engineered with no internal electrical components which could trigger an explosion and meet OSHA and National Fire Protection Association safety requirements.