Pleat Filter(prefilter,v type filter) Pass ISO9001 quality certificate F6 Filter Efficiency Size: 400 x 400 x 46mm Frame: AL Pleat Filter(prefilter,v type filter)Model No:ZXL04Item: pleat air filterFeature:Media: Folding with non-woven cloth on efficiency F6;Frame: Dalvanized Steel, or Aluminum Alloy;Providing airflow for high-intensity, large air volume, low resistance and max. filter area;Large ...