The MAF1 (3-Pack) Emerson MoistAir Humidifier Replacement Wick Filter is specially treated with an antimicrobial agent that is resists the growth and migration of mold, algae, bacteria, fungus, and mildew both on itself and inside your humidifier. Using a humidifying system during the winter months will help to improve the comfort of your air while saving you money on heating bills. For optimum performance, replace your MoistAir Humidifier Wick FIlter every 2 to 3 months, depending on usage and hard water conditions. The Kenmore Emerson MoistAir replacement wick filter fits AIRCARE MA1201, MoistAIR MA0950, Kenmore 14410, and more. Order by 4pm CST for same day shipping!