Guardian Technologies Universal Air Filter for Humidifier

Features

• Easily attaches to nearly all PureGuardian humidifier models, including: H1500, H1600, H2000, H2500, H4500 and H4600
• Helps prevent the release of minerals in the air than can cause white dust
• Approximately every 1000 hours of use or about 260 gallons of water depending on the condition of water you are using in the product