Compatible Models: Evaporative Humidifier Models: EV100, EV200, EVDC300, EVDC500, Evap2 and Evap40 (Not for Evap3) Kit includes four (4) MD1-0034 evaporative humidifier replacement wicks Premium Replacement Core:Made of high-quality materials, recommended for replacement at intervals for optimal performance Capture minerals and contaminants from humidifier water, help prevent white dust and make your humidifier work better Colour:White Material:filter cotton Size:24x18.5cm Package Contents: 4 * humidifier filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.