The base of the filter insert is the filtration medium in the form of special filtration papers made of glass sub-micron fibres. 

    This filtration paper is folded into a stable folded thread, whose optimal number and height of folds is in compliance with the operating point of the filter and ensures the required filter class and long lifespan of the filter insert. The paper is separated by hot melt (MACROPUR) beads or with separators made from aluminium foil (MACROPUR). 

    Filter thread is hermetically sealed into a stable, torsion-resistant filter frame and along with endless sealing from PUR foam it guarantees a high-quality sealing of the filter insert in the mounting cabinets. This filter structure is the base for compliance with high requirements for air purity. The basic frame is made of MDF. On request, it is also possible to make the filter frame from zinc-plated, stainless or aluminium metal sheets. 

    Field of use

    • Medicine
    • Microbiology
    • Chemical industry
    • Pharmaceutical industry
    • Food-processing industry
    • Electrical engineering industry
    • Nuclear technology

    Examples of use 

    This highly efficient filter insert with high arrestance of all types of aerosols is used as the end filter of multi-level filtration in air-conditioning and ventilation equipment, for purifying of inlets and outlets of air in technologically demanding processes and purification of air from health-harmful dust, viruses, and bacteria in hospital facilities. 

    Advantages of design 

    • High mechanical stability
    • Optimal structure of the thread
    • Steady output airflow velocity
    • Various types of frame and sealing


    • Filter inserts, various sizes.
    • Paper separation: hot-melt beads, aluminium foil.
    Filter class [EN 1822]H 13
    Initial pressure drop [Pa]250
    End pressure drop [Pa]750
    Arrestance [%]>99.95
    Max. operating temperature [°C]80
    Max. relative humidity [%]100
    Filter mediumMicro-glass fibre