Easy Installation and Wide Compatibility: Designed specifically for models HU4101 , HU4901/HU4902/HU4903 this humidifier filter is incredibly easy to install. Its universal design ensures it fits perfectly, making it an essential accessory for your humidifier to maintain optimal performance.EcoFriendly and Material: Constructed from highquality paper material, this ecofriendly humidifier filter is both safe and . It offers a reliable solution for your humidifier, ensuring longlasting use while being environmentally responsible.Recommended Replacement Schedule: To maintain the highest efficiency of your humidifier, it is advised to replace the filter every 23 months depending on usage. Regular replacement helps keep the humidifier running smoothly and ensures the air quality in your space is consistently clean and healthy.Effective Impurity Filtration: This filter excels in removing impurities from the air, enhancing moisture output significantly. It's designed to trap particles effectively, which helps in maintaining a cleaner and more comfortable indoor environment in your home or office.Versatile Use Across Multiple Settings: Perfectly suited for use in environments such as bedrooms, living rooms, and offices. This filter ensures your humidifier operates efficiently, providing clean and moist air wherever needed, enhancing comfort and air quality wherever it's installed.[Product name] for air purifier filter[Applicable models] for : HU4901/HU4902/HU4903Colour:WhiteMaterial:Wood pulp fiberPackage Contents:3 x air purifier filterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.