20-Stage Shower Filter-Shower Head Filter for Hard Water, with 3 Replaceable Cartridges, High Output Shower Water Filter for Removing Chlorine and fluoride, Brushed Nickel20 Stage Filtration: KDF 55, Alkaline Ceramic Balls, Activated carbon, Calcium Sulfite and other filtering materials ensures best effect of water quality purification. 20 Stages filter materials can effectively reduce chlorine, heavy metals, rust, sand and other sediments 3 Replacement Cartridge: Contains a total of 3 filter cartridge. Capacity of each cartridge is 12,000 gallons of water, which provides clean and odorless water and can be used by a