With the Stadler Form Oskar/Karl Filter (8 units), you get 8 replacement filter cassettes for your Oskar or Karl humidifier. The antibacterial filters purify the water and prevent bacteria. This way, you can be sure that your humidifier provides clean air. For proper humidification, we recommend replacing the filters once every 2 to 3 months.
With the Stadler Form Oskar/Karl Filter (8 units), you get 8 replacement filter cassettes for your Oskar or Karl humidifier. The antibacterial filters purify the water and prevent bacteria. This way, you can be sure that your humidifier provides clean air. For proper humidification, we recommend replacing the filters once every 2 to 3 months.