• Filter combination of 4 sequenced, special individual elements to reduce and eliminate all kinds of room air problems
• 4in1 combi filter comprising pre-, EPA (E11), activated charcoal and cold catalytic converter layer
• Pre-filter: coarse particle filtration of larger particles such as skin flakes, hair and dust
• EPA (H11) filter made from fine fibre material: captures the smallest particles down to a size of between 0.1 and 3 µm (e.g. bacteria 0.6 to 1.0 µm, fine dust 0.1 - 10 µm, pollen 10 - 100 µm) for efficient air cleaning
• Activated charcoal filter: gases and unpleasant odours. Activated charcoal has excellent absorption properties - it can deodorise, dehumidify and in some cases trap viruses and have a sterilising effect
• Additional cold catalytic converter layer: absorbs organic compounds such as formaldehyde and benzene
• Removes 99.2 % of pollutants down to a size of 3 µm from room air

• 1 4in1 combi filter

Vacuum the pre-filter every 1 to 2 months with a vacuum cleaner to remove deposited dirt.
Recommended change interval for the entire combi filter: at least every 12 months, depending on the device's level of use.