Lot of 2  The Walgreens Cool Mist Humidifier Filter is designed for use with specific Walgreens humidifier models, including the HF2112-UL 890-WGN and LEV320. This filter is made in China and is specifically designed for whole room humidification using the cool mist humidification method. It is an essential component for maintaining indoor air quality and creating a comfortable environment in your home.