Everydrop by Whirlpool Refrigerator Water Filter 5 EDR5RXD1Z (Pack of 1) NSF Certified to Reduce 16 contaminants, including pharmaceuticals, waterborne parasites, lead, mercury, pesticides, asbestos and industrial chemicals Certified to fit these leading refrigerator brands: Whirlpool, MAYTAG, Kitchen Aid, JENN-AIR and Amana. Replaces Filter 4396508 Used in bottom freezer and side-by-side refrigerators which accept Filter 5 Replace filter every 6 months or 240 gallons to maximize contaminant reduction Certified Genuine Part by Whirlpool Corporation This is a EveryDrop by Whirlpool Water replacement part Part Number EDR5RXD