The manufacturer, this 2-Pack Refrigerator Water Filter in Whirlpool and KitchenAid side-by-side with filter access in the grid base. Rotate just remove the water filter refrigerator 1 / 4 turn and replace. While retaining beneficial fluoride, this NSF Certified Refrigerator Water Filter reduces cysts, asbestos, chlorine taste and odor, particulates (class I), lead and mercury. Remove contaminants or other substances or reduced by the filter water is not necessarily all water users. Replacement of this refrigerator water filter every 6 months ensures clean drinking water. Read customer review 