NSF Certified: NSF Certified to Reduce the Most Contaminants. Reduces 24 contaminants, including pharmaceuticals, waterborne parasites, lead, and pesticides.r. Cost-effective: Our OEM refrigerator water filter features the same great quality as original filter at a fraction of the price. You can never pay the several times price for a simple filter cartridge. Compatible with: Certified to fit leading refrigerator brands. For more details, please read the picture 2 carefully to get more information.