Whirlpool Water Filter - SBS 1/4 Turn
The Whirlpool 481281729632 removes the following impurities from your drinking water:

95.1% of Particulates (Class II)
99.0% of Chlorine
99.35% of Lead at pH 6.5
99.31% of Lead at pH 8.5
96.22% of Mercury at pH 6.5
91.57% of Mercury at pH 8.5
96.4% of Benzene
99.77% of P-Dichlorobenzene
92.86% of Toxaphene

Also fits KitchenAid and Kenmore side-by-side refrigerators with filter located in the grille at the base of the fridge freezer.