Massive filter housings with 1" ports for the strongest water pressure possible - up to 20 gallons per minute. Powerful purification - removes up to 95-percent of sediment, chloramines, chlorine, chemicals and other contaminants that create foul tastes and odors. Triple the dirt holding capacity of similar sized cartridges. More capacity, less maintenance. Multi-gradient depth polypropylene sediment filter. 25-micron surface, 10-micron inner layer, 5-micron inner layer, 1-micron inner core. Radial Flow Catalytic Carbon. The Power of Catalytic Carbon with Radial Flow Design Low Pressure Loss