Filter Cartridge Reduces Scale Micron Rating Not Rated Flow Rate 1 gpm Outside Diameter 3 1/4 in Overall Height 10 1/2 in Service Life 25 000 gal Filter Media Hydroblend Polyphosphate For Use With Mfr No MRS-600HE Application Reverse Osmosis Systems Cartridge Media Polyphosphate Compatible Mfr Model Number MRS-600HE Filter Design Specialty Maximum Pressure 125 psi Maximum Temperature 100 Degrees F Minimum Pressure 10 psi Minimum Temperature 35 Degrees F Series 2SR-BW