Combo Special: Premium Performance Filter & Reusable Cleaning Cartridge- HGN Type (Please see product images to verify the filter type) For New HG-N Model Only (please see the product images to verify) Highest grade coconut shell carbon block (2 Micron) and KDF media Reduce water contaminants such as: chlorine, taste and odor, organic chemical compounds, total organic carbon, lead and mercury. Reusable Cleaning Cartridge holds 3 times more of the cleaning granule than E-Cleaner to get better cleaning result. Use only Crystalline Cleaning Granule (AF-CCG) to Refill on the use of Reusable Cleaning Cartridge.