Massive filter housings with 1 inch ports for the strongest water pressure possible - up to 15-Gallon per minute * Dual gradient density replaceable sediment filter produces finer filtration and greater dirt holding capacity. Filtration down to 1 micron * 100,000-Gallon capacity replaceable coconut shell carbon filter provides a full year of clean water for a family of four * Excellent purification - removes up to 95-percent of sediment, chlorine, chemicals and other contaminants that create foul tastes and odors * Oversize filters improve flow rate and reduce maintenance frequency