Filtered air non woven kraft frame white pre air filter Feature Product Details1.StylePleat,Folding2.FeatureDust collection, Large dust collection,High quality,High efficiency3.MaterialNon-woven fabric,Activated carbon4.SizeOEM ,Customizing is welcome5.ColorWhite,Orange,Green,Red,Yellow,Black6.FrameGalvanized,Aluminum alloy,Plastic..