Fits Vicks humidifier models: V3100, V3500, V3500N, V3600, V3700, V3800, V3850, V3850JUV, V3900, V3900JUV, VEV320. For the V3100, you will "flatten" the filter out. If you examine your original filter you will see that it, too, is a round filter.
Fits Kaz HealthMist humidifier model: 3020.
Fits Enviracaire models: ECM-250i, ECM-500.
Fits ReliOn model: WA-8D.
Replaces Part # WF2.
This humidifier filter is designed to prevent growth and migration of mold, fungus, algae, and bacteria.
This is not a Vicks®, Kaz®, Enviracaire® or ReliOn® OEM product. The Vicks®, Kaz®, Enviracaire® and ReliOn® brand names and logos are the registered trademarks of their respective owners. Any use of the Vicks®, Kaz®, Enviracaire® and ReliOn® brand names or model designations for this product are made solely for purposes of demonstrating compatibility.