Product Description G4 pleated industrial air filters : Pre-filters of non-woven material are designed to capture the big particles in the air. Using the supefine synthetic filter media with different colors and sizes for options, it is mainly used in areas requiring primary filtration. In addition, they can be reused after washing. Features: 1.Low resistance and high air flow 2.Great ability to capture large particles 3.Synthetic material of different specifications 4.Fixed with frame of carton/aluminum/galvanized steel 5.Strong and anti-deformation 6.Washable and reusable 7.Dimension can be customized and low cost Application: G4 pleated industrial air filter is widely applied in all kinds of HVAC systems and ventilation machines as coarse filters to capture large particles and dust in the air. Our advantages: 1. Own factory and competitive price 2. Automatic production line. 3. Integration of manufacturing and trading 4. 9 years of professional experience 5. ODM, OEM acceptable 6. Good after-sales service Pictures: