3M Cuno Cuno CFS9112-S 55892-01 Compatible Water Filter, KleenWater Granulated Activated Carbon Block Replacement Filter, Set of 3 Three 3M Cuno CFS9112-S 55892-01 Compatible Replacement Water Filters by KleenWater Granulated Activated Carbon Block Filter 10,000 Gallon Capacity at 1.67 Gallon per Minute Flow Rate 1 Micron Filtration High Quality, Low Cost Replacement Alternative Made In the USA