A refrigerator/freezer is like a duplex, where the residents of one apartment like moist, 38-degree air, and the residents of the other like dry, zero-degree air. If the two must share a cooling system, both will be uncomfortable.
With dual refrigeration, Sub-Zero ensures that both the fresh food compartment and the frozen food compartment get exactly what they need. And, the 650G model's glass door transforms the 650 into an elegant condominium for your groceries.