Tropic OxyRain Shower Filter with Extra-Wide 8-Spray Showerhead, Brushed Nickel Shower Filter Replacement Cartridge SLC-APSLC lasts 4-6 months or 7,000 gallons; 1 filter included. Flow Rate: 2.5 GPM, Conserves Water and Energy 30%  70%). 10" wide showerhead, 9" adjustable arm. 8 oxygen-rich sprays; 100 spray nozzles; 30% more water pressure while conserving water and energy. Removes 98.9% chlorine, NSF tested for chlorine removal, standard #177