Save time and money with this Sub-Zero 4204490 two pack. This 4204490 Replacement Subzero Water Filter can be used in Built-In Refrigerators, Integrated Refrigeration, and PRO refrigeration. To ensure clean crisp water, make sure to replace your Subzero Water Filter 4204490 every six months. Only use genuine Sub-Zero water filters in your Sub-Zero Refrigerator. This Sub-Zero Water Filter replacement part will ensure that your whole family is drinking safe drinking water. 4204490 Replacement Water Filter Fits Built-In, PRO48, and Integrated Refrigerators Ensures your Sub-Zero serves the highest quality water and ice for up to six months! Meets or exceeds NSF/ANSI Standards 42 53