This 2 in 1 Dual Water Filter eliminates the need to have a separate carbon or sediment filter, saving you space and hundreds of dollars a year in replacement filters. The SDP-4510 effectively eliminates many impurities from tap water to offer sparkling clean water throughout your whole house. This whole house filter system offers a dual 2 in 1 filter solution, it is a sediment and GAC carbon filter in one. This single system can be used in residential or commercial applications. This Dual Purpose Radial Flow filter has a Polypropylene Sediment filter outer layer, a Granular Activated Carbon (GAC) 2nd layer and a 5 micron inner core. Layer 1 - Sediment Outer Layer Filters: Sand, Soil, Silt, Sediment and Rust. Layer 2 - GAC Inner Layer: Further reduces sediment, chlorine taste and odor. Layer 3 - Inner Core: The inner core filters out contaminates down to 5 micron.