Whirlpool Water Filter: * Provides 100 gallons or up to six months of clean, filtered water and ice per filter * Removes 99% of lead and microbial cysts (cryptosporidium and giardia) * Reduces many other contaminants like 97% of trace levels of pharmaceuticals. (Pharmaceutical reduction is not certified by NSF/ANSI or state standard. Based on manufacturer testing for average reduction in trace levels of 12 pharmaceuticals. Pharmaceuticals may not be in all users" water.) * Fits refrigerators with a Quarter Turn in-grille water filter * Compatible with refrigerators that accept part numbers: 4396510, 4396548, 9010, 8212491, 4396508, 4396547, 4396918 and W10186668