Kaz WF1 Humidifier Filter, AfterMarket:
The Kaz KO1 is a humidifier wick filter that traps impurities from entering the air. The K01 is also referred to as the WF1 and fits numerous Kaz humidifier models, including:
The Kaz WF1 Replacement Humidifier Filter - KAZ 3300 has an antimicrobial agent that prevents bacteria, mold, and algae from forming in your humidifier filter, keeping it from being released into the air.
The Kaz KO1 specifications:
Product Dimensions: 5.1/8 x 23.5 x 0.5 inches