GAC Granular Activated Carbon 10? for Under Sink / Manual Filters " Suited/Compatible Only for Wall Hanging or Undersink RO Models " Can be fitted inside a 10 Inch RO Filter Housing Bowl. This GAC Filters Composed of High-Performance Activated Carbon Which Removes Free Chlorine, Odour, Organic Contaminants, Pesticides and Chemicals. Health is Wealth. The recommendation from RO Unit Manufacturer is to change the Filter Cartridge Set over a Period 13-4 Months to avoid Clogging of the Filters and Damage to the Water Filter Purifier Machines. Regular Replacement of Inline Filter Cartridge for your RO will Save service cost and time. 10 Inch Filter.