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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)