Replacement for Estate 4396701, 4396703. Replacement for Kenmore/Sears 46-9915, 4609915000, 9915 and 0469915000. Replacement for Kitchen Aid 4396701, 4396702, 2301705 and 2301706. Replacement for Lowes 183592. Replacement for Whirlpool 4396701, 4396702,2301705, 2301706, WF-NL120V, NL120V, WF120V and WF200V. Filters Class I particulates down to 0.52 microns. Reduces bad taste, odors, sediment, and more. Needs to be replaced every 6 months or more, depending on water quality and usage.