How can metal help to close fridge door?

Metal can help close a fridge door by utilizing magnets, which are often integrated into the door seals. When the fridge door is closed, the magnetic strips align with corresponding metal components in the fridge frame, creating a secure seal that keeps the cold air inside. This magnetic attraction helps ensure that the door stays closed tightly, improving energy efficiency and maintaining the desired temperature. Additionally, metal hinges provide durability and smooth operation for opening and closing the door.