1 Type Cartridge filter 2 Material Synthetic Fiber 3 Efficiency 99.99% 4 White/Black Color 5 Industry Dust collector   Spun Bonded Polyester Air Filter Cartridge with PTFE Media 1, Suitable for the fitration of very fine dust type in welding fumes, mechanical processing, pharmaceutical and construction industries and sticky dust collection. 2, Imported spun bonded polyester with PTFE membrane, microporou offers 99.99Percentage filter efficiency. 3, Wide pleat spacing and smooth, hydrophobic PTFE provides excellent particle release. 4, Excellent resistance to chemical erosion. 5, Electrochemical plate/stainless steel top and bottom, no rust perforated zinc galvanized metal inner core allows good airflow. 6, Applicable temperature: 93-135.