A fire door is a specially designed door that helps prevent the spread of fire and smoke between different compartments of a building. Constructed from fire-resistant materials, fire doors are an integral part of a building's passive fire protection system. They are typically equipped with fire-resistant glazing, intumescent seals, and self-closing mechanisms to ensure they close automatically during a fire. Fire doors are rated based on the duration they can withstand fire exposure, such as 30, 60, or 90 minutes. These doors play a crucial role in maintaining safe egress routes, protecting occupants, and minimizing property damage by containing fire within designated areas. They are commonly used in commercial buildings, residential complexes, and industrial facilities.

Fire doors come in various types, each designed for specific applications and levels of fire resistance. Here are the main types of fire doors:

1. Flush Fire Doors:

   • Description: Feature a smooth, flat surface with no decorative paneling.
   • Suitable for: Modern and minimalist interiors in commercial and residential settings.

2. Panel Fire Doors:

   • Description: Have raised or recessed panels for a more traditional appearance.
   • Suitable for: Areas where aesthetics are important, such as offices and homes.

3. Glazed Fire Doors:

   • Description: Incorporate fire-resistant glass panels to allow visibility and light transmission while maintaining fire resistance.
   • Suitable for: Offices, hospitals, and schools where visibility and natural light are important.

4. Metal Fire Doors:

   • Description: Made from steel or other metals for enhanced durability and security.
   • Suitable for: Industrial facilities, commercial buildings, and high-security areas.

5. Timber Fire Doors:

   • Description: Constructed from fire-resistant wood, often used for aesthetic purposes.
   • Suitable for: Offices, hotels, and residential buildings where a natural wood finish is desired.

6. Double Fire Doors:

   • Description: Consist of two doors that meet in the middle, often used in wider openings.
   • Suitable for: Large commercial and industrial spaces that require wider egress routes.

7. Sliding Fire Doors:

   • Description: Slide open rather than swinging, saving space in areas where traditional doors are impractical.
   • Suitable for: Warehouses, factories, and large retail spaces.

8. Acoustic Fire Doors:

   • Description: Combine fire resistance with soundproofing capabilities.
   • Suitable for: Music studios, conference rooms, and residential buildings where noise reduction is important.

9. Radiation Shielding Fire Doors:

   • Description: Provide protection against both fire and radiation, often incorporating lead.
   • Suitable for: Medical facilities and laboratories that require both fire and radiation protection.

10. Emergency Exit Fire Doors:

    • Description: Equipped with panic bars or other quick-release mechanisms for rapid egress during emergencies.
    • Suitable for: Public buildings, schools, and commercial spaces where quick evacuation is necessary.

Each type of fire door is engineered to meet specific safety, functional, and aesthetic requirements, ensuring comprehensive fire protection in various building environments.