The First Alert 4-A:60-B:C rechargeable commercial fire extinguisher ideal for large commercial needs. Our largest multi-purpose use extinguisher fights flammable liquid, electric, wood, paper, fabric and other types of fires. Durable metal head is designed to meet demanding commercial use requirements. If discharged, this unit can be recharged by a certified professional. Includes commercial strength wall mounting hook to keep unit secure. Meets UL standards.