- Premium 4-Piece Value Pack: This pack includes 4 high-quality, durable humidifier filters designed specifically for Honeywell HAC-504, HAC-504AW, and HAC-504V1 models. Enhance the moisture output of your Honeywell HCM 350 humidifier with our optimized filter design. - Wide Compatibility: Our filters are compatible with numerous Honeywell humidifier models, including HCM350W, HCM-350, HCM350, HCM-350B, HCM-300, HCM310T, HCM-450B-CST, HCM-500, HCM540, HCM550, and many more. They fit seamlessly into your humidifier, ensuring reliable and efficient operation. - Advanced Construction: Featuring a rigid absorbent paper design, these replacement filters maintain structural integrity even when wet, eliminating sagging issues and ensuring consistent performance. - Practical Applications: Ideal for enhancing air quality in homes, offices, and bedrooms, these filters help reduce dryness, alleviate allergy symptoms, and promote a more comfortable living environment. - Ensure Optimal Humidity: Regularly replacing your humidifier filters is essential for maintaining optimal humidity levels. Our filters not only improve moisture output but also protect your humidifier from damage, leading to prolonged device life. - Trustworthy Performance: Count on our filters to deliver steady results, making them a vital accessory for your Honeywell humidifier. Invest in quality filtration for better air and overall health.