Reduces 24 contaminants, including pharmaceuticals, waterborne parasites, lead, pesticides, asbestos and industrial chemicals (NSF certified). Certified to fit these leading refrigerator brands: Whirlpool, MAYTAG, KitchenAid, JENN-AIR and Amana. Used in bottom freezer refrigerators. Filter compartment is in the top right corner. Replace filter every 6 months or 200 gallons to maximize contaminant reduction.