SPECIALITY: * The product is made of fluffy glass and has advantages of high dust holding capacity and long cycle life. It's an ideal material for primary air filtration. With Green-white color, water resistant; * Gradual increasing structure by high strenghth fiberglass media, Air inlet is green color & Air outlet is white color; * High Dust holding which is completely useful for the filtration fibre to keep the oil mist, spray painting & the dust. * The compression packing save the cost of transportation, after decompression , it will be its original condition. * Nonflammability, temperature resistance 170.C. * Applied to G3/G4 types panel filter by the waterproof cardboard frame & Metal frame. APPLICATION: Widely used for course filtration of air and oil in iron and steel, electronic, chemical, automobile, environment and power industries as well as various air-conditioning systems.