Quick Details Condition: New Efficiency: G3-G4 Construction: Roll Filter media Filtration Grade: Pre Filter Medium Material: Synthetic Fiber Porosity: n0 Place of Origin: Guangdong, China (Mainland) Brand Name: Longwell Model Number: LWF-300 Certification: ISO9001:2000 Specifications Anti-fractured PET organic synthetic Washable and disposable types Easy to usuable in air conditioning Harder types Prefilter Media rolls G3-G4/EU3/EU4 Advantages: Smooth airflow through paint booths Progressively built up thermal bonded polyester fibre Application: For use as a prefilter in air conditioning, and spraybooth ventilation. Media: Synthetic EN 779:2002 filter class: G2. G3 .G4. Arrestance efficiency: 85%-92%. Temperature: 80.C -100.C Max.in continous service. Fire rating: DIN 53438 class F1. SPECIFICATION: Type LWF-100 LWF-200 LWF-300 LWF-500 LWF60 Material Polyester Polyester Polyester Polyester Polyester Thickness (mm) 5 10 15 18 20 Air velocity (m/s) 2.0 2.0 2.0 2.0 2.0 Avg.arrestance (%) 2.0 2.0 1.5 1.5 1.0 Initial resistance (Pa) 20 30 35 25 40 Final resistance (Pa) 150 200 250 250 250 Anti-Temp. (.C) 68 83 85 88 91 Dust holding (g/m2) 380 450 500 550 580 Class (UL900) G2 G3 G4 G4 F5 Non-flammability DIN53438-F1 Roll size (m) 2.0 * 20 1.6 * 20