http://tinyurl.com/opmv99e

Jarden Consumer-Domestic 3Pk Repl Wick Filters Hwf100-U Humidifier Chemical & Accessories

3-pack of replacement humidifier filters with reinforced outer layer

Traps mineral deposits from water so humidifiers can run more efficiently

Treated with Arm & Hammer Baking Soda and Microban Antimicrobial Product Protection

Install at the beginning of each season, replacing every 2 to 4 weeks or as needed

Measures approximately 5-3/5 by 4 by 7-4/5 inches