Whirlpool 4396841 PUR Push Button Side-by-Side Refrigerator Water Filter

This Whirlpool PuR water filter is used in Whirlpool, KitchenAid, Maytag, Amana, and JennAir side-by-side refrigerators with filter access in the base grille. For optimal results, you should replace this refrigerator water filter every 6 months to ensure clean, safe drinking water and ice. Changing the filter is easy just locate the old filter, twist and turn it until it becomes loose, then pull the old filter out and replace with the new filter. For side-by-side refrigerators with filter access in the base grille, follow these instructions for replacing your filter: Push the eject button, then pull the filter cap, Remove the filter cap by turning it counter clockwise, Remove the packaging and O-ring covers from the new filter, Align arrows on the cap and new filter. This PuR Fast-Fill Refrigerator Water Filter is used in Whirlpool and KitchenAid Fast-Fill side-by-side refrigerators with filter access in the base grille. Simply press the release button to remove and replace the Refrigerator Water Filter. 

The water filter really does deliver better water. However, the water filter seems quite expensive to me. To remove the old filter you push a button next to the filter, typically to the left of the filter. Then pull on the cap covering the filter and pull the filter out. Install the filter cover onto the new filter. Yes, the filters are expensive, but they are Pur water filters which, in my opinion, are better than Brita.