Why not use standard steel fire shutters?

Fire curtains are a lot more efficient that normal steel shutters. Fire Curtains contain heat more efficiently than steel shutters and are comparably more compact, stylish and safer than heavy steel shutters which can roll down unexpectedly. Automatic Fire Curtains are also far quieter, using highly advanced electronics & controls, ensuring they are suitable for refits and building refurbishments, designed to work with building management systems.