This series is made of prolonged and hardened fiber, it is sprayed with special blue glue. The blue glue is able to show the use life directly, when the blue part being covered with dust totally, the filter must be replaced.
Application: ≥ 5μ M, Filter dust, (especially used in the train or the subway, where the place has air-conditioner), pre-filter through air filter program.
ModelAF-200GAF-150GWeight:200gr/sqm150gr/sqmThickness:15mm13mmAir Flow Rate:1980 stere/h2160 stere /hInitial Resistance:15pa15paFinal Resistance:200pa200paMedium Arrestance:77.40%68.30%Air Velocity:0.55m/s0.60m/sDust Holding:285gr/sqm254gr/sqmMax Temperature:110 cent degree110 cent degreeFiltration Class:G3(DIN 24185)G2(DIN 24185)Flame Resistance:F-1(DIN 53438)F-1(DIN 53438)