The Amerex model 240 fire extinguisher utilizes the cooling, soaking, and penetrating effect of a 45-55 foot stream of WATER. The 55-second discharge time makes it effective for inexperienced operators for use on Class A fires that include combustibles such as wood, cloth, paper and many plastics. This section chrome-plated brass valve and polished stainless steel cylinder construction helps eliminate corrosion. This fire extinguisher, which has a 5-year manufacturers warranty, ships empty.