4 Piece Value Pack for Honeywell Humidifiers - Includes four premium replacement filters designed to fit Honeywell HFT600 T filters and to work with Honeywell HEV615 and HEV620 humidifiers. Made from high-quality, durable material with an upgraded filter design that both captures large particles and helps maximize moisture output. - Compatible with Honeywell humidifier replacement filters. Precision designed and manufactured for HEV615 and HEV620 models, and compatible with HTF600 Filter and Filter T. - Upgraded blue pre-filter layer. The blue pre-filter helps reduce the quantity of large particles circulating in your air, supporting cleaner indoor air alongside humidification. - Easy installation instructions. Soak the replacement wick filter for Honeywell T Filter used with HEV615 and HEV620 in cool water before replacing to ensure uninterrupted moisture output. Place in the filter housing with the blue layer facing outwards (towards you). Use scenarios - Winter humidity improvement in bedrooms or living rooms. Use with HEV615 or HEV620 to maintain comfortable moisture levels while helping reduce circulating large particles. - Nursery or child’s room air quality. The blue pre-filter layer helps limit large particulates, supporting a cleaner environment in areas where children spend time. - Office or workspace humidification. Maintain steady humidity and air quality in shared spaces by using these filters in compatible Honeywell humidifiers.