COMPATIBLE WITH OSKAR & KARL EVAPORATOR: The humidifier filters are suitable for all Oskar and Karl humidifier models (Oskar little, Oskar, Oskar big, Karl, Karl big) from Stadler Form. HIGH EFFICIENCY: The specially optimised humidifier filters from Stadler Form give Oskar little, Oskar, Oskar big, Karl and Karl big the best possible humidification performance and thus ensure healthy room air.
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