【Reinforced Metal Layer Design】: Features metal layer construction for enhanced and extended service life Resists shape changes during prolonged use, surpassing regular Keywords: strong filter, fortified frame, long lasting 【Wide Brand Compatibility】: Fits multiple models including V line ( V3100 V3900), K type 3020, S group ( 1118 1120), H series ( HCM 300T to HCM 710), and others Easy installation with accurate fit for various humidifiers Keywords: humidifier filter, replacement filter, compatible 【Mineral Control Filtration】: Helps reduce white deposits by regulating minerals and impurities in water Provides fresher indoor environment, ideal for dry conditions Keywords: deposit reduction, screened environment, mineral regulation 【Improved Net Configuration】: Engineered with advanced net pattern for better absorption and air movement Promotes faster and more even humidity distribution Keywords: efficient humidification, refined net design, air circulation 【High Absorbent Material】: Made from premium fiber substance for excellent water holding and consistent evaporation Delivers dependable function over time Keywords: absorbing intermediate, uniform output, fiber