3M Aqua-Pure Whole House Compatible Water Filters for Model AP110-NP 2 Pack by CFS 3M Aqua-Pure Whole House Compatible Water Filters for Model AP110-NP 2 Pack by CFS 5-micron rated filtration helps reduce the smallest problem particles Multi-stage filter construction maximizes dirt-holding capacity Ridged design maximizes surface area, increasing overall filter life Flow rate of 8 gallons/30.3 liters per minute provides a steady supply of filtered water for drinking, laundry, and bath