A fire door is a special kind of door that helps keep people safe in case there is a fire.
When there is a fire, it produces heat, smoke, and flames that can spread very quickly. Fire doors are designed to stop the spread of fire by blocking the fire and smoke from passing through the door.
Fire doors are made of special materials that can withstand high temperatures and are designed to close automatically if there is a fire. They are also designed to be strong and sturdy so that they can resist the force of the fire and prevent flames from getting through.
Fire doors are important because they give people time to escape in case of a fire. They help to contain the fire so that it doesn't spread quickly, and this gives firefighters a chance to put it out before it causes too much damage.
Remember, fire doors are like superheroes that protect us during a fire. They are essential safety devices that are installed in buildings to keep us safe from danger.