Product Description Pre-filter materials G3 G4 efficiency laminated filter fabric Synthetic materials of different densities compounded in 3D structure through needle punch, adhesion, meltblown technology. Specifications could be customized for different demands of our customers. Features: 1. Low resistance 2. Large dust holding capacity 3. Synthetic material of different specifications 4. Material density increases gradually 5. Non-toxic and odorless 6. Fire-resistant. 7. Dimension can be customized Parameters: Application: Needle punched synthetic roll filter media is widely used in pleated pre-filters to capture particles in air conditioners, paint booths and panel filters. Why us: 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: