The FFFD-314-2 (2 Pack) replacement filter is designed to fit all Frigidaire. PureSource Ultra refrigerators using the ULTRAWF filter. Located at the top right of the fresh food compartment and is a push/push style filter. Tested to meet NSF/ANSI standards to ensure that you are getting a safe, quality product, Fridge Filterz provide you and your family with clean, fresh tasting, odour free ice and water. Fridge Filterz are manufactured to the highest quality standard. They are designed remove Cyst, Lead, Turbidity, Mercury, Toxaphene, P-Dichlorobenzene, Atrazine, 2 4-D, Benzen, Chlorine,Particulate Class I, through the highest level particulate filtration. The carbon filter block keeps all the beneficial minerals that are present in your water. If fluoride has been added to your drinking water, it is not filtered out after coming out the refrigerator. All our fridge filters are made with environmentally friendly carbon. FFFD-312-2.