Abundant Flow Water CF3-4520-SDGCCB 20" 3 Stage Big Blue Whole House Complete Water System with 4.5" Diameter Sediment, GAC, Carbon Filters, x quot Simple in/out connection & instructions allow for most homeowners to install themselves Ball valve and pressure release allows for simpler filter changes with less mess Sediment filter removes sediment, sand, & particulates, providing cleaner, Clearer water Carbon & GAC filters remove odors, tastes, & chemicals, including chlorine, herbicides, & pesticides Designed for 2-4 bathrooms homes with 3-6 people