FilterBuy Replacement Humidifier Wick Filters Compatible with WF2 Kaz & Vicks. Pack of 4. Pack of 4 Kaz & Vicks WF2 Humidifier Wick Filters. Aftermarket replacement filter manufactured by FilterBuy. Fits various Vicks, Kaz, and Relion units including Kaz HealthMist 3020, Vicks Natural Cool Mist V3020, Vicks V3100, Vicks V3500, Vicks V3600, Vicks V3800, Vicks V3900, and Vicks V3700. Dimensions: 5" H x 3 1/2" ID x 5 1/2" OD x 1" Thick. Premium aftermarket replacement, designed by FilterBuy in the USA. Humidifier FilterBuy: Breathe Better!