WhirlpoolOur advanced generation of ice & water refrigerator filters from EveryDrop™ Filters are certified to reduce the most contaminants — with Triple Filtration Technology. Filter 4 reduces 31 contaminants, so you can feel reassured that you and your family are getting the most out of your water. Remember to replace your refrigerator filter every 6 months to maximize contaminant reduction.86392207883049362403