- REPLACEMENT HUMIDIFIER FILTER: This humidifier filter is a direct replacement for Holmes HWF-64 humidifiers, ensuring optimal performance for your home. - REINFORCED DESIGN: Featuring a robust construction, this filter is designed for enhanced durability and efficiency. For best results, replace your filter every two months. - WIDE COMPATIBILITY: This filter is compatible with various models including Holmes HM-1645, HM-1730, HM-1745, HM-1746, HM-1750, HM-2200, and HM-2220 (HWF-64). It also works with Hamilton Beach models 05520, 05521 (05920), and more. - EXTENDS FILTER LIFE: The humidifier wicking filter effectively traps minerals and sediments, especially in hard water areas, prolonging the lifespan of your filter. - PRACTICAL USE CASES: Ideal for maintaining optimal humidity levels in your home, this filter is perfect for use in bedrooms, living rooms, or offices. It helps alleviate dryness-related issues such as dry skin, allergies, and respiratory discomfort. - PERFORMANCE: Crafted to enhance your humidifier’s function, this filter ensures consistent moisture output, providing a comfortable environment for you and your family. Choose this reliable replacement filter to keep your humidifier running smoothly and effectively.