Extruded Carbon Filter, 10" Big Blue To Remove Chlorine, Taste and Odor from Drinking Water Cartridge Dimensions: 4.25"O.D.  9.75"L, Fits a 10" Big Blue Filter Housing Excellent for use as a Prefilter or Whole House Filter 10 Micron Sediment Filtration; High Dirt-Holding Capacity AMI Model No. H-F4210AC