Replacement Humidifier Wicking Filters fit for ReliOn Humidifier models RCM832 (RCM-832), RCM832N (RCM-832N), DH832 (DH-832) and DH830 (DH-830); fir for Duracraft / Robitussin Humidifier models DH830, DH832, HC832. Humidifier Wicking Filters replace # WF813 AC 813, AC-813, AC813, ACR-832, D13-C, D13C. Approximate Size: 5-15/16 inch x 3-15/16 inch x 1-7/16 inch. Honeycomb pad design, allows for maximum absorption of water for optimum moisture output. Capture impurities in water, such as mineral deposits. While inhibit the growth of mold, bacteria, algae, and fungus, it allows a smooth, cool and invisible mist to permeate your home¡¯s air. Maintain healthy indoor air quality. Essential for Allergy. This replacement Humidifier Wick Filter is a great, affordable option for your home humidification. This replacement filter to prevent your home air excessive dryness, especially during winter and summer the low humidity occurs most often. This decrease in humidity can have uncomfortable effects on your body, aggravating your nose, throat, allergies, and even triggering asthmatic symptoms. Replace a new HAC-504 Humidifier Wick Filter is a good solution to increase the air humidity. JJDD focus on provide high quality products at fair price: Professional support; 90-day Months warranty. If you unsatisfied with our product, you can return. LEGAL DISCLAIMER: The Brand name & Model # (if listed) are for cross reference only. All Brands, Trademarks & Model Numbers remain the property of their respective owners