The ReplacementBrand RB-RFC-BB replacement water filter is a comparable filter for the Culligan and Pentek RFC-BB water filters, as well as the GE FXHTC water filter. This 25 Micron, 10 x 4.5 inch Radial Flow, Granualar activated Carbon water filter will reduce chlorine taste and odor, as well as other impurities, all without reducing your water flow.