Water Factory SQC Filter Pack includes (4)47-55702g2, (4)47-55704g2, (4)47-55710g2. Part # 47-55700G2-S4. The SQC Filter Pack 4 provides dependable service for 2 to 3 years. It is a reverse osmosis drinking water system. The benefits of this filter include easy pre and post change of filters. The module comes with quick-connect fittings for easier replacement. Sanitary Quick Change systems (SQC) eliminate the need to replace/handle the filter media that can be very expensive. SQC Filter Pack helps to filter out toxic contaminants like Arsenic, Barium, Lead, Cadmium, Radium 226/228, Fluoride, Total Dissolved Solids (TDS), and Turbidity apart from cysts and the unpleasant taste and odor of chlorine.