Compared to standard, it features enhanced layered filtration that deeply purifies water and minimizes scale formation Maintains strong filtering even after prolonged use With up to 90% filtration efficiency, it effectively removes minerals and impurities from water, reducing scale buildup inside your humidifier and extending its life Each filter lasts approximately 3 months depending on water and usage frequency Suitable for especially in dry season or air conditioned spaces, this humidifier filter helps relieve dry skin and respiratory discomfort, creating a comfortable living or working environment Selected from fiber with excellent breathability, this filter ensuring humidified air Easy installation for quick replacement Designed exclusively for HFT600, HEV615 and HEV620 humidifiers, this replacement filter ensuring clean, moist air while maintaining your humidifier ' s efficiency