Designed to fit your GE* and Kenmore **refrigerators with a round white plastic filter housing mounted inside the refrigerator compartment above the top shelf. Refrigerators that use the MWF, GWF, GWF01, GWF06, HXRT, GWFA, MWFA, HOTPOINT HWF, HWFA, MWFA, and Kenmore 46-9991, 9991, 469991, replacement water filter. Tested by an ANSI ACCREDITED INDEPENDENT TESTING FACILITY to meet NSF/ANSI standard for Cyst, Standard 42 & 53, Particulate Class I, to ensure that you are getting a SAFE, Quality product. WE DO NOT PERFORM OUR OWN TESTS. All Fridge Filterz are Standard 42, Aesthetic Effects, for reduction of chlorine for taste and odour and are Particulate Class I, the highest level particulate filtration. The advanced filter block technology used in the Fridge Filterz GE Refrigerator filters are Standard 53 for Health Effects, traps and contains impurities and Cysts (parasites and/or coliform bacteria that could be present in your drinking water). This system has been tested according to NSF/ANSI 53 for reduction of the substances listed below. The concentration of the indicated substances in water entering the system was reduced to a concentration less than or equal to the permissible limit for water leaving the system, as specified in NSF/ANSI 53. This filter block has been tested for the reduction of 11 CONTAMINANTS: -Chlorine Taste & Odour -Particulate Reduction Class I -Cysts -Lead -Turbidity -Mercury -Atrazine -2,4-D -Benzene -Toxaphene -P-Dichlorobenzene -Rated Service Flow:0.5 gpm at 60 psi. -Capacity: 1,135 L / 300 gal / 6 month filter life. -Minimum Working Pressure: 30 psi. -Maximum Working Pressure: 120 psi. -Minimum Operating Temperature: 33 degrees F. -Maximum Operating Temperature: 100 degrees F. This is a mechanical and chemical reduction filter.