MERV stands for Minimum Efficiency Reporting Value, and measures a filters’ efficiency in removing small particles. The higher the MERV rating, the more particles the filter can remove.
Whirlpool Refrigerator Water Filters
Founded in 1911 by Louis and Emory Upton, Michigan-based Whirlpool is now one of the world's largest manufacturers of home appliances, according to www.whirlpool.com.
With multiple manufacturing sites across the United States, the company has diversified from the motor-driven wringer washers of 1911 to all sorts of major and minor appliances. Whirlpool now manufactures washing machines, refrigerators, microwaves and other various laundry, kitchen, and home appliances for home owners worldwide.
In addition, Whirlpool produces appliance accessories like refrigerator water filters. All products are OEM (Original Equipment Manufacturer) filters and will work with refrigerators by Whirlpool, Amana, KitchenAid, Maytag and other brands. Also, the units are able to replace fridge filter models that are no longer being produced by the company. The 4396841 was made specifically for refrigerators with "Fast-fill" or "PUR Measure" dispensers. Installation and filter replacement is straightforward and easy. After installation, you are ready to enjoy a drink of cold, crisp, clean water. Most refrigerator units even have indicators to alert you when it's time to change your filter.