Natural-Breeze Reusable & washable humidifier replacement Filter for Honeywell HAC-504 Filter type A, Protec WF2, Bestair HW500 Compatible humidifiers : - Honeywell HCM-350, HEV355 , HCM-710 , HCM-315. HEV312, HCM-300T, HCM-305T, HCM-310T, HCM-551, HCM-560, HCM-630, HCM-631, HCM-632, HCM-710, HCM 1000 Series, HCM-2000 Series ; - Enviracaire ECM-250 ; - Vicks V3100, V3500, V3600, V3900, VEV320 , V3700 ; - Kaz Healthmist 3020 ; - Sunbeam 1118, 1119, 1120 . Size : approximate diameter 6.75 inch (outer) / 4.75 inch (inner) x 4.75 inch height x 1 inch thick Made of great quality Dura-Ester synthetic material with better resistance to wear and tear ,our washable and reusable filters withstand continuous use better than conventional disposable paper filters . With its rigid construction , it is more resistant to any build up of mineral deposit and can be washed frequently. Maintenance is minimal with simple rinsing or washing with water . Our filters work efficiently to absorb moisture and trap any impurities and improve the air humidity levels inside your home and are compatible with your Honeywell, Kaz Healthmist , Vicks, Sunbeam humidifiers that use the filters Honeywell HAC-504 Filter type A, Protec WF2, Bestair HW500. Our Dura-Ester reusable and washable filter is easy to use, clean and precisely sized to fit the humidifiers that use the filters Honeywell HAC-504 Filter type A, Protec WF2, Bestair HW500. With proper maintenance and periodic cleaning, the filter can be utilized for an extended duration, offering long-term cost savings and environmentally friendly benefits. Natural-Breeze is an independent USA seller of Dura-Ester Washable & Reusable Humidifier Filter. We are an independent Company supplying filters for Humidifiers and Air Purifiers/Cleaners. Any mention of Brand names Honeywell, Protec, BestAir , Enviracaire , Vicks , Kaz Healthmist, Sunbeam and their Humidifiers and wick filters is to show compatibility only. Buyers are advised to check with their Air Humidifier Manufacturer's Warranty prior to purchase and use of any non OEM product. Natural-Breeze Reusable filter replacement for Honeywell HAC-504 type A filter, Protec WF2, Bestair HW500 Works with these Humidifiers : - Honeywell HCM-300T, HCM-305T, HCM-310T, HCM-551, HCM-560, HCM-630, HCM-631, HCM-632, HCM-710, HCM 1000 Series, HCM-2000 Series- Enviracaire ECM-250- Vicks V3100, V3500, V3600, V3900, VEV320 , V3700- Kaz Healthmist 3020- Sunbeam 1118, 1119, 1120Constructed with the rigid polymer Dura-Ester material with high efficiency to draw water and resist calcification, our filters are economical and durable for optimized filtering and can be washed and reused multiple timesDepending on the quality & hardness of the water used in the humidifier, this filter can last five to twelve times longer than conventional disposable wick filtersIf you need help finding a Natural-Breeze replacement filter wick for your humidifier, please contact usSize : approximate diameter 6.75 inch (outer) /4.75 inch (inner) x 4.75 inch Height x 1 inch thickDisclaimer : This is a Natural-Breeze reusable filter replacement product. Any mention of the brand names Honeywell, Enviracaire, Vicks , Sunbeam , Protec , BestAir and their humidifiers and wick filters is to show compatibility only. Buyers are responsible to check with their Humidifier manufacturer's warranty prior to use of any non OEM products