FALCON 2kg ABC Dry Powder Fire Extinguisher (Pre Order)FALCON 2kg ABC Dry Powder Fire Extinguisher Dry Powder Fire Extinguishers are multi purpose extinguishers suitable for extinguishing Class AB fires. The AB Class Fire Extinguishers are widely used in commercial and residential buildings. It extinguishes the fire by a chemical reaction with the flame. When it is spread onto hot and smoldering surfaces, the particles expand to create a barrier to snuff out oxygen, which prevents the fire from growing.