Fit model: The “A” wicking filters (HAC504) for Honeywell Humidifiers in the HCM-350, HEV355, HCM-710 and HCM-315/HEV312 Model Series. If you are tired of changing so many humidifier filters every season and wish you could get that you can wash, clean, and reuse over and over again, you have found the right product!
eBay