... Product Character: 1, Aluminum frame and metal frame,2, Material: chemical material and class fiber material, 3, Efficiency: F5-F9.4 ... houshold.Ankelin, for the one and only high-tech for filter, so worthy of choice, your life partner.Advantage1, washable2, replaceable ... manufacture accordingto client's requirement dimensions. F5 aluminum frame polyester bag filter for air-conditioning