The Instaview door is great in concept.  We kept milk in the Instaview door but the milk soured due to high temperature in the Instaview door.  We bought two refrigerator thermometers and put one in the Instaview door and one in the refrigerator.  The refrigerator is set for 33 degrees.  The Instaview door thermometer read in the mid 40s for a week.  The refrigerator thermometer read 38 to 42 for a week.  We have had to remove all food from the Instaview door due to spoilage.  Cannot recommend this refrigerator due to inconsistent temperature fluctuations and food spoilage.