Refillable Mixed Bed DI Resin Filter Cartridge Fits most standard 10″ size
10" Standard Mixed Bed DI Refillable Filter. 5 ppm - 1000 gallons, 10 ppm - 500 gallons, 50 ppm - 100 gallons, 100 ppm - 50 gallons, 200 ppm -25 gallons, 300 ppm - 18 gallons, 400 ppm - 14 gallons, 500 ppm - 10 gallons.