Materials: Plant, Fiber5x humidifier/air filter for Philips humidifiers- adapted air filter for your Philips air humidifier- 100% absolute fit, s adapts perfectly to your humidifier model- Prevents the growth and migration of mould, fungi, algae and bacteria- Material: natural honeycomb structure fibers- Thickness: 30 mmThe high-quality replacement filter ensures optimal air humidification and impeccable hygiene and thus a more comfortable and healthier room climate.A clean filter binds impurities such as bacteria and lime from the water and prevents the spread of mold and spores in the surrounding air.The filter is made of natural fiber with a bike structure, which provides safe absorption of water and thus better evaporation. br/ br/ Our tip:For the humidifier to work efficiently and hygienically, the filter should be cleaned regularly and, depending on use, replaced approximately every 3 - 6 months.Replace:HU4102 HU4102/018815002ACA-3ESuitable for the following device models:Compatible with the Philips 2000 seriesHU4801HU4801/01HU4802HU4803HU4803/01HU4811HU4811/10HU4813HU4813/10HU4814HU4814/10Also suitable for Enviracaire, Honeywell units, Relion, Sunbeam, Vicks and similar units.