Pentair Everpure EV969231 Cartridge Filters; Length (Inch): 14-1/2 ; Outside Diameter (Inch): 3-1/4 ; Micron Rating: 0.5 ; Construction: Solid ; Material: Carbon; Phosphate ; Reduces: Chlorine; Bacteria Growth; Cysts; Limescale; Sediment; Taste & Odo