Value Pack - Premium replacement for Honeywell HFT600 Filter T filters for your Honeywell HEV615 & HEV620 humidifiers. Made from high-quality, durable material with an upgraded filter design to both filter large particles and maximize moisture output Upgraded Blue Pre-Filter Layer - Our premium upgraded blue layer pre-filter helps reduce the quantity of large particles circulating in your air Compatible With for Honeywell Humidifier Filters Replacement Filters - Compatible with HTF600 Filter & Filter T. Precision designed and manufactured for humidifier models HEV615 & HEV620 Tips For Daily Use - For best results, flip your compatible for Honeywell humidifier T filter daily and only fill humidifier tank with distilled water (this applies to all brands of filters). Hard water degrades ALL compatible for Honeywell humidifier filters and yellows them prematurely Installation Instructions - Soak your replacement wick for Honeywell T Filter for humidifier HEV615 and HEV620 in cool water before replacing to ensure uninterrupted moisture output. Place in filter housing with blue layer facing outwards (towards you) Material:wood pulp paper colour:Blue Package Contents: 4 * filter elements