Set of 4 Replacement Filters Cartridg for (Aquverse Clover RO Water System) This set of filters includes the following :-Filters SED, CM, RO25, CB Sediment Filter, Pre-Carbon Filter, RO Membrane for dissolved solids and a Mineral+Carbon Combo to neutralize pH.Total of 4 filters including the RO membrane.Stage 1 : CLV-SED FILTER5 Micron Filter for Sediment Reduction6 Month Rated Life (2,500 Gallon Capacity)Quick-Change Filter (No Wrench Required)Stage 2 : CLV-CB FILTER5 Micron Carbon Block Filter to reduce chlorine taste and odor6 Month Rated Life (2,500 Gallon Capacity)Quick-Change Filter (No Wrench Required)Stage 3 : CLV-CM FILTERActivated Carbon and Calcite Filter for taste and pH balance12 Month Rated Life (2,000 Gallon Capacity)Quick-Change Filter (No Wrench Required)Stage 4 : CLV-RO25Thin Film Composite Reverse Osmosis Membrane to reduce Total Dissolved Solids (TDS)24 Month Rated Life95-98 % Efficiency rating, for 23.39 Gallons Per DayQuick-Change Filter (No Wrench Required