Measure the space where the refrigerator is placed. There should be 1-inch of space on both sides, behind and on top of the refrigerator to allow for air flow to the condenser coils in the back, as recommended by GE appliances, a maker of French door refrigerators.
Measure the distance between a perpendicular wall and the refrigerator.
Push the refrigerator away from the perpendicular wall so there is at least 2 1/2 inches of space between the side of the refrigerator and the wall to allow for the French door to swing open, as another French door manufacturer, KitchenAid, suggests.