Firechief PyroCloud SSS12000 series aerosol generators can be used as a part of a highly effective fixed extinguishing system. A Firechief PyroCloud generator is nonpressurized and is installed inside a room or compartment that requires protection. After activation, an aerosol cloud is generated, which expands volumetrically, flooding the space and extinguishing the fire. The Firechief PyroCloud generators are mainly designed to use in normally unoccupied and unoccupied areas and are effective on class A, B, C and F fires.