Suitable for use on class A (trash, wood and paper), class B (liquids and gases) and class C fires (energized electrical equipment). The PRO 460 is fitted with a pressure gauge that provides at a glance status, is manufactured from impact resistant steel and the valve assembly is all aluminum. Features bilingual nameplate and carton. A 4-A:60-B:C rated extinguisher is required for protecting high hazard occupancies such as vehicle repair shops, manufacturing processes involving flammable liquids, boat servicing and woodworking processes.