ReplacementBrand RB-CP5-BBS Comparable Filter for the Culligan CP5-BBS Model Comparable to the Culligan-CP5-BBs Water Filter Fits in other brand housings that use the standard 10 x 5 inch filters Lasts for 6 months or 600 gallons Reduces Sand, Soil, Silt, sediment, and rust Nominal 5 Micron Pleated Cellulose Filter