Filter Cartridge Reduces Corrosion Micron Rating Not Rated Flow Rate 0.5 gpm Outside Diameter 3 1/4 in Overall Height 20 3/4 in Service Life 30 000 gal Filter Media Calcium Carbonate For Use With Mfr No MRS-100CC/225CC/350CC Application Increase Hardness Compatible Mfr Model Number MRS-100CC MRS-225CC MRS-350CC Filter Design Specialty Filter Type Corrosive Tendencies Maximum Pressure 125 psi Maximum Temperature 100 Degrees F Minimum Pressure 10 psi