EveryDrop by Whirlpool Refrigerator Water Filter 5 (Pack of 1) Polypropolene Imported Reduces 23 Contaminants NSF replacement element No Tools Required Replace Cartridge in seconds Certified to fit these leading refrigerator brands: Whirlpool, maytag, kitchenaid, jenn-air and amana Replaces model numbers 4396508 & 4396510 Used in bottom freezer and side-by-side refrigerators Replace filter every 6 months or 200 gallons to maximize contaminant reduction replaces asin B0009793KC & B000UW3RK8