4 Pack of Premium Humidifier Filters | Compatible with Honeywell Humidifier Filter HAC-504, HAC-504AW & Honeywell Filter A | Replacement for Honeywell Filter HCM 350 & Other Cool Mist Humidifiers
4 Piece Value Pack - 4 premium humidifiers filters for your Honeywell HAC-504, HAC-504AW, and HAC-504V1 humidifier filters. Made from high-quality, durable material with an optimized filter design to maximize your compatible Honeywell HCM 350 filter moisture output
Upgraded Blue Filters - Our upgraded filters feature a blue pre-filter to catch large particles before they enter your air, for even higher air quality
Rigid Construction To Reduce Sagging - Constructed with rigid absorbent paper to improve the filter's structure once wet and reduce sagging
Usage Tips - For best results, flip your compatible Honeywell humidifier filter HAC 504 replacement daily and only fill humidifier tank with distilled water. Hard water greatly reduces the life of our compatible Honeywell humidifier filters and yellows it prematurely. Soak in cool water before replacing to ensure uninterrupted moisture output.