Product Name: Washable Panel Pre Filter Model NO.: DSP-40 Type: Folded Filter Filtration Grade: Pre & Medium Filters Efficiency: G4-F5 Medium Material: Synthetic Fiber frame: Aluminium or Galvanized Transport Package: Cartons Specification: 595*595*44mm, or Upon customers' request Origin: China HS Code: 4823200000 Product Description Description:· High quality polyester synthetic fibre ;· metal frame, easily replace· Pre-filtration and second filtration for the ventilation system of the air condition;Specification:ClassSizeW*H * DRated air flowThe ratio of the initial resistance and the rated airflow ( Pa )70%100%120%G4595*595*46mm3400m3/h5085110G4595*595*96mm3400m3/h4580105F5595*595*46mm3400m3/h85130190F5595*595*96mm3400m3/h75105145