The Fridigaire PureSource Ultra Refrigerator Filter ULTRAWF filters found in Frigidaire thoroughgoing Source Ultra Refrigerators with go past mounted rounded filter housing. In addition, it will also Part Numbers 242017800 and A0094E28261. these contaminants : Chlorine, Particulates -LRB- Class 1 -RRB-, cause, Cysts, Turbidity, Atrazine, 2,4-D, Endrin, Toxaphene, Mercury, Lindane, Alachlor, Benzene, P-Dichlorobenzene, O-Dichlorobenzene, Ethylbenzene, Chlorobenzene, Monochlorobenzene, Styrene, Tetrachloroethylene, TTHM, Carbofuran, Asbestos, 2,4,5-TP, and 1,2,4 Trichlorobenzene.