Everpure 155263-43

RFFE 20-BB Replacement Cartridge, RFFE 20-BB, (4) RFFE 20-BB iron reduction cartridges, 26,000 gallons at 3 ppm, 40,000 gallons at 2 ppm, 80,000 gallons at 1 ppm, 160,000 gallons at 0.5 ppm, NSF 42 (155016-43)