• Lifefilter Replacement for 4204490 Filter Statement: Lifefilter refrigerator water filter is tested and certified by NSF international against NSF 372 and NSF 42 certification.
• Compatible with Sub-Zero Refrigerator Water Filter: 4204490, 4290510, 9030868, PRO 48, PRO 48 with glass door, BI-36F freezer, BI-36U up and down refrigerator/freezer, BI-48S side-by-side refrigerator/freezer, BI-48SD side-by-side Refrigerator/freezer, BI-36UG glass door refrigerator/freezer, BI-30U up and down refrigerator/freezer, BI-30UG glass door refrigerator/freezer, BI-42S side-by-side refrigerator/freezer, BI-42SD side-by-side refrigerator/freezer.
• Innovative Mulit-Layers Filtration System: Lifefilter water filter replacement can effectively reduce 97.9% of the chlorine, heavy metals, sediment, rust, bad taste and odor. The Outer layer is 0.5 microns, ensuring better filtration.
• Premium Filter Materials: BPA-free and food-grade materials. We adopt natural coconut shell carbon block that contains larger surface area and more micropores.
• Easy Installation: The water filter replacement for 4204490 features a twisted design for quick and easy filter change. Leakproof fit, free of tools. For optimum performance we recommended that you change your filter every 6 months or 300 gallons.