SUB-ZERO - WATER FILTERS
Sub-Zero 4204490 Refrigerator Water Filter Replacement. The filter is capable with 4204490, 4290510, PRO48, PRO48 G (Filter is installed behind the pop-up grille) This product is tested and Certified by NSF International against NSF/ANSI Standards 42&53. Made by Cuno Inc. for Sub-Zero (country of origin U.S.A)