Materials: Plant, Fiber 5x humidifier/air filter for humidifiers Adapted air filter for your air humidifier 100% exact fit, designed to perfectly match your humidifier model Prevents the growth and spread of mold, fungi, algae, and bacteria Material: natural honeycomb structure fibers Thickness: 30 mm High-quality replacement filter ensures optimal air humidification and excellent hygiene for a more comfortable and healthier indoor environment A clean filter captures impurities such as bacteria and limescale from water and helps prevent mold and spores from dispersing into the air Filter made of natural fiber with a honeycomb structure that enables efficient water absorption and improved evaporation Our tip: For optimal performance and hygiene, the filter should be cleaned regularly and replaced approximately every 3 to 6 months depending on usage Replacement for: HU4102, HU4102/01, 8815002, ACA-3E Compatible with the following models: 2000 series HU4801, HU4801/01, HU4802, HU4803, HU4803/01, HU4811, HU4811/10, HU4813, HU4813/10, HU4814, HU4814/10 Also compatible with select Enviracaire, Honeywell, Relion, Sunbeam, Vicks, and similar models