Cation Resin Filter Cartridge (Refillable) 20"x4.5"
20" Big Blue Cation Resin Filter Cation exchange resin for hardness reduction & water softening Size: 4.5" x 20", fits Big Blue filter housings Ion exchange process - Water Softener Hard Water Filter Effectively reduces Calcium and Magnesium in tap water Removes low concentrations of Iron in tap water (for iron levels of 0.3 PPM and higher, use an Iron filter) Prevents hard water scale High Capacity - Water Softening Capacity: 4500 Grains of Hardness | Maximum flow: 5 GPM Operation Temperature Range: 40°F-125°F Operation Pressure Range: 40-80 PSI (Maintain a minimum operating pressure of 60 PSI to avoid home water pressure drops) All filters are individually wrapped and should be kept in a closed bag, moist, and stored at room temperature (40 to 75 Fahrenheit) Caution: Install this filter after the sediment filter to prevent rapid buildups. Follow with a CTO or GAC carbon filter to combat unpleasant odors effectively. Without a carbon filter after the Cation filter, there is no effective way to address the issue of foul odors.