http://www.waterfilters.net/refrigerator-water-filter-water-sentinel-wsw-1.html<br />The WSW-2 WaterSentinel filter is a compatible replacement filter for the Whirlpool 4396508 and 4396510. The WSW-2 filter cartridge has been tested by the manufacturer against ANSI/NSF Standard 42 for the reduction of Chlorine Taste and Odor.
