A fire sleeve is a protective covering made from intumescent materials that expands when exposed to high temperatures, creating a barrier to prevent the spread of fire and smoke through openings in walls, floors, and ceilings. Fire sleeves are important because they play a crucial role in containing fires within a confined area, limiting the damage to the building and reducing the risk of injury or loss of life. By maintaining the integrity of fire-rated structures and restricting the passage of flames and hot gases, fire sleeves help to enhance overall building safety and compliance with fire regulations. In the event of a fire, fire sleeve provide valuable time for occupants to evacuate safely and for emergency responders to control the blaze, ultimately contributing to the protection of lives and property.