NSF certified to reduce 28 contaminants including lead, pesticides and pharmaceuticalsFor clean, fresh-tasting water, replace your everydrop Water Filter every 6 months.Warning: Damage caused by a non-genuine everydrop Water Filter is not covered under Whirlpool Corporation's warrantyUsed in compatible side-by-side, top freezer and bottom freezer refrigeratorsCheck your previous filter number to confirm compatibility with your refrigerator