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    Filter classes

    Coarse dust

    Filter class G1

    Filter (usually lattice-like) for coarse impurities such as leaves, birds, large insects.

      Filter class G2

      Filter dust concentrations without gross requirements for air purity and hygiene as textile fiber, fly ash, hairs. Supply air for cooling of large machinery and switchgear, compressors.

      Filter class G3

      Filters for coarse dusts such as sawdust, gross domestic dust, sand. Also used as a pre-filter.

      Filter class G4

      Filters for air conditioning and ventilation systems for coarse dust as found in indoor plumbing and ventilation systems. Prefilter in channel filters for the separation of large dust.

      Fine dust

      Filter class M5-M6

      Fine dust filters for air conditioning and ventilation systems with low requirements. Applications are for example Indoor pools, panel vents, pollen filter, photo labs, dryers, air conditioners with high purity air filter for HEPA filters.

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      Filter class F7-F9

      Fine dust filters for air conditioning and ventilation systems with low requirements. Applications are for example Indoor pools, panel vents, pollen filter, photo labs, dryers, air conditioners with high purity air filter for HEPA filters.

      High performance particle filters

      Filter class E10-H14

      High performance particle filter, for example application In the food industry, research and development, micro-technology, electronics, medicine.

      Filter class U15-U17

      High performance HEPA filter for filtering such as aerosols, radioactive aerosols, oil mist and soot in the state of origin. (not in the Fischer product range)