Wheeled fire extinguisher units feature: 50lb ABC dry chemical, stored pressure, UL rated 30-A, 160-B;C. Rugged industrial design for commercial applications, wheeled for mobility and flexibility. Operating pressure 240psi, Operating time: 36.00 s [min], Operating distance 25-35 ft. Diameter 28 3/4", Extinguishing material: Monoammonium Phosphate. Fire type: Common Combustibles, electrical equipment, flamable gases and solvents.