Includes Following Filters 1 x Sediment Filter Stage 1 1 x Carbon Filter Stage 2 1 x Post Carbon In-line Filter Stage 4 RO Filter For Vertex 4-Stage RO System Features Sediment Filter Features Filter Life 6 Months Rating 5 Micron Material 100% Pure Polypropylene Filters Following Impurities Sediment Dirt Silt Rust Scale Coarse Sand Dimension 2.5 x 10 Carbon Filter Features Filter Life 6 Months Rating 5 Micron Material 100% Coconut Shell Carbon Filters Following Impurities Chlorine Odors Bad Taste High Chemical Absorptive Capability High Turbidity Reduction Dimension 2.5 x 10 Post Carbon In-line Filter Features Filter Life 6 Months Flow Rate 0.75 Gallon Per Minute Filters Following Impurities Chlorine Odors Bad Taste Smell Enhances Taste of Water Filter Life 1000 gallon Salt Rejection 98% Max pressure 125 psi Dimension 2 x 10