Supply of Portable Fire Extinguisher Dry Chemical Powder Cartridge Type Having Composite/Ss/Aluminum Cyl Inder To Is:15683/2018, Normal Capacity Of Extinguisher-6 Kgs For Extinguishing Class B & C Fire With Clause 9.2.6, 9.2.7 Or 9.2.8 Of Is:15683/2018.