Details: - Compatible with Vornado MD1-0001, MD1-0002, MD1-1002 humidifier filter and Vornado evaporative humidifiers including model numbers 221, 232, 421, 432 and HU1-0021. - High quality air filter that can replace your Vornado humidifier filter. Get back to clean air to breathe again.-A healthier lifestyle! High quality air humidifier top filter to prevent the release of limescale, bacteria and germs and fungi in a safe and clean air humidifier filter. - Easy to install so you can get back to cleaning as soon as possible! Simply remove the old filter and place the new one in its place. Replaces #MD1-0002Filters. -Keep clean, antibacterial treatment helps prevent the growth and migration of mold, fungi and bacteria on the filter. Removes minerals and impurities from water. The replacement filter is an ideal replacement for natural cool humidifiers and significantly helps remove minerals and contaminants from water. Package Content: 2x Filters Note: The real color of the item may be slightly different from the images shown on website caused by many factors such as brightness of your monitor and light brightness.