- Premium 4-Piece Value Pack: This pack includes 4 durable humidifier filters specifically designed 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 work seamlessly with numerous Honeywell Humidifier models, including HCM350W, HCM-350, HCM-350B, HCM-300, HCM-450B-CST, HCM-500, HCM-550, and many more. This ensures reliable and efficient operation across a variety of devices. - Additional Model Compatibility: These filters are also compatible with HCM630, HCM631, HCM632, HCM635, HCM640BW, HCM645, HCM646, HCM1000, HCM2000, HCM2050, and HEV312. This extensive compatibility makes them a versatile choice for your humidification needs. - Rigid Construction: Featuring a robust absorbent paper design, our filters maintain their shape and performance, even when saturated. This eliminates sagging issues, ensuring consistent moisture output and improved air quality. - Practical Applications: Ideal for use in bedrooms, living rooms, or office spaces, these filters help create a comfortable and healthy environment by preventing dryness. Perfect for allergy sufferers or those facing dry air conditions, they enhance humidity levels for better respiratory health. - Easy Installation: Designed for a perfect fit, these filters can be easily replaced in your humidifier, making maintenance hassle-free and ensuring optimal performance at all times. Choose our Honeywell-compatible humidifier filters for a reliable, high-quality solution to your humidity needs. Enjoy consistent performance and improved air quality with every use.