Four Door Refrigerator

A refrigerator is an open system that dispels heat from a closed space to a warmer area, usually a kitchen or another room. By dispelling the heat from this area, it decreases in temperature, allowing food and other items to remain at a cool temperature.A door-in-door is a hidden compartment behind an exterior panel—typically on a French-door refrigerator—that pops open with the press of a button. The design allows you to reach for often-used items without heaving open the entire door and letting warm air rush into the rest of the refrigerator.