This part is the replacement end cap trim for your refrigerator. It is made of white plastic and is approximately 1 inch wide, 1 inch long, and ½ inch thick. This part can also be known as the shelf support retainer as it holds the shelf support in place. If the end cap trim is damaged, the shelf support may not remain in place and you will not be able to store items in your refrigerator door. To replace the end cap trim, carefully disconnect it from both the refrigerator door and the shelf support. Then, snap the new end cap trim into the shelf support and then to the door. This part is sold individually and is an authentic OEM part.