Comparable Filters for the ReplacementBrand RB-CBC-1001 and GE FX12P Reverse Osmosis Pre and Post Set, 4-Pack by CFS Comparable Filters for the ReplacementBrand RB-CBC-1001 and GE FX12P Reverse Osmosis Pre and Post Set, 4-Pack by CFS 4) 2- 1micron and 2-5micron Comparable Filters for the ReplacementBrand RB-CBC-1001 and GE FX12P Fits in other brand housings that use the standard 10 x 2.5 inch filters Lasts for 6 months or 900 gallons Great as a pre and post filter for reverse osmosis systems Reduces Chlorine taste & Odor as well as sand, soil, silt, sediment, and rust.