This Amerex ABC multipurpose dry chemical, direct pressure, wheeled fire extinguisher covers your large-scale fire protection needs. Designed for a one-man operation, these units are easily transportable through doorways and over rough terrain and is ideal for offshore rigs, ship docks, refineries, chemical plants, aircraft ramps, remote construction sites, large laboratories, processing plants, storage and loading areas. This fire extinguisher is used on Class A (wood, paper, cloth), Class B (flammable liquids and gases), and Class C (electrical) fires. Direct pressure extinguishers feature a nitrogen cylinder with a quick opening brass valve to pressurize and to completely discharge the agent cylinder. This 125 lb. wheeled unit has 16-inch semi-pneumatic rubber wheels, is fully charged, with the option to include an annual inspection tag.