ReplacementBrand RB-RFC-BB Comparable Filter for the Culligan RFC-BB, Pentek RFC-BB and GE FXHTC Model Comparable to the GE-FXHTC, Pentek RFC-BB, and Culligan RFC-BB Water Filter Fits in other brand housings that use the standard 10 x 5 inch filters Lasts for 6 months or 600 gallons Reduces Chlorine taste & Odor as well as sand, soil, silt, sediment, and rust. Nominal 25 Micron Radial Flow Carbon Block