Structure: pleated fiber filter medium, one side is attached with metal mesh anti corrosion, which is galvanized rhombus mesh or aluminum rhombus mesh. Usually, white, blue and green for option colors. White stands for G3, blue stands for F4 and green stands for F5. Filter fabric is made by thinner PET. Multilayers composed gradient composite medium. Cardboard frame material has normal cardboard frame and high strength cutting cardboard frame.
Mainly for big diameter particle and dust particle filtration. Often applied in SPC exchange(stored program and fixed temperature and humidity air conditioner in computer room, central fresh air handling unit and ventilation system. Recommended change period is 3 months.