Showerwise - Deluxe Replacement Cartridge Replacement Cartridge for Showerwise Deluxe Shower Filtration System Part Number WW1197 for the Showerwise Model 1195 Patented Filter Media: Chlorgon & KDF-55; Maximum Flow Rate: 2.5 gal./min. at 80 psi Cartridge Life Expectancy: Up to 15,000 gallons or 12 months