Flat filter with metal frame, for filter holder drawers.
Size 297x297x48 mm.
The F7 filter is often used in addition to the G4 filter to completely purify indoor air.
Therefore, it can filter extremely fine particles:

    Pollen,
    bacteria,
    Fungus,
    Etc.

Overall, the F7 filter is highly recommended for excellent indoor air quality. It not only protects against allergies but also protects against outside pollution.