Features: * Reinforced design for longer life and better efficiency * Traps impurities in the water * Fits: * Holmes HM1645, 1730, 1745, 1746, 1750, 2200, 2220 * Hamilton-Beach 05520 and 05521 * White-Westinghouse WWHM1645 What"s In The Box: * Bestair H64-C Extended Life Humidifier Filter