Specification: This series of spray boothfilters are mainly used in surface spray-paint industry,especially forceiling filter in spray booth,which is processed by high-powered nonwovens of antibreak synthetic fiber; (Gradual structure)The fiber density increases gradually toward pure air;high filter efficiency;extend working life; Fully imgrenated media with adhesive treament makes dust particles unable to pass; Conform to the nonflammability standard and classification to European DIN53438-F1 and American UL900-class1; High moisture resisitance;relative humidity can be 100 degree.