Quality Humidifier Replacement Filter – Model WF813 Materials: Constructed from natural hydrophilic fabric with a multilayer mesh design to maximize moisture output and ensure humidifier performance. The upgraded aluminum foil reinforcement enhances stability and filtration capability, extending filter lifespan and maintaining consistent efficiency over time. Wide Compatibility: Designed to fit a wide range of humidifier models. Compatible with Kaz WF813; ReliOn WF813, RCM832, RCM832N; ProCare WF813, RWF13, PCWF813, PCWF813, PCCM832N, PCCM840; Equate EQWF813, EQ2119UL; Sesame Street SH100, SH200. Also compatible with select Duracraft and Robitussin models, including DH830, DH832, AC813, ACR832, D13C, HC832, and others as listed. Accurate Sizing: Each filter measures approximately 5.6 x 3.75 x 1.62 inches. Please confirm compatibility by checking the size and model of your humidifier before . Minor variations in measurements may occur due to manual measurement. Easy Installation: your old filter quickly and easily by removing the used part and inserting the one in its place. For maximum performance and longer filter life, use distilled water in your humidifier instead of hard water. Reliable Performance for Everyday Use: This filter helps maintain cleaner, moister air by trapping impurities and allowing water absorption. Ideal for use in bedrooms, living rooms, offices, or children's rooms to reduce dryness, improve comfort, and support better air quality during dry seasons or when heating systems are in use. Practical Applications: 1. Use during winter months to counteract dry indoor air caused by heating systems. 2. Maintain proper humidity levels to help relieve dry skin, nasal passages, and throat irritation. 3. Keep air quality in baby nurseries, workspaces, or any environment where consistent moisture output is important. This WF813 humidifier replacement filter provides dependable performance, fits multiple compatible models, and supports a healthier and more comfortable indoor environment.