The sub-zero 4290510, PRO 48 4204490 and 7012333 most compatible and technology replacement refrigerator water filter by internationally certified Swift Green Filter SGF-DSA21. It reduces volatile organic compounds (VOC), chlorine taste and odor(CTO), lead, cysts and more. Using swift green filter's Innovative green technology and clinically tested and certified raw materials that carbonize dried coconut shells to provide 50% more access to micro-pores for capturing contaminants.