This model has an adjustable temperature range of 1 to 12 Deg C and an average temperature stability of -/+3 Deg. Its exterior-mounted 1/2 inches LED displays temperature. 13986227G features a CFC-free (R134A) refrigerant, steel cabinets and its lockable solid-steel doors have hinge mechanism that holds doors open at 95 Deg angle and closes with a gentle push. The thermopane glass doors provide easy access and visual inventory control. This unit with its genuine features, is an ideal chromatography refrigerator.