Cardboard Quebrafil


  • Rule: EN-779
  • G4 efficiency: 95 %
  • Maximum temperature in continuous operation: 80 ºC
  • Relative humidity: 90 %
  • Recommended final pressure drop: 250 Pa
  • Maximum admissible pressure drop: 400 Pa


These are filters made with cardboard frames. Inside them there is a filtering media made of polyester and cotton, with a metal mesh stuck to this media to ensure greater strength inside the cardboard frame. These are used as prefiltration for air treatment units.