Original humidifying filter for PureProtect 3400
This genuine Philips humidification filter is designed to fit your device perfectly, ensuring consistently high performance. Using NanoCloud technology, it releases nano-sized water molecules to humidify the air while reducing bacteria by up to 99.9% (1).

• Compatible with 3400 Series
• Lifespan of up to 6 months
• Hygienic humidification with NanoCloud technology
• Connect with the Air+ app for added convenience