Nu-Calgon Cartridge, nu-i2000 Series, 0.5 um, Asbestos, Chlorine Taste, Odor, Cryptosporidium Parvum Oocysts, Giardia Cysts, Sediment, Bacteriostatic Contamination Removal, 1.67 gpm Flow Rate, 20-3/4 in Height, Additional Information: 9000 gal Capacity