These high quality filter wicks are made by a leading manufacturer to fit portable humidifiers from Holmes, Bionaire, Sunbeam, and others. Patented "Extended Life" design prevents by-pass air, extending the filters higher output Anti-bacterial treated Replaces OEM part number HWF-75 Replace the filter (evaporating wick) at least once per humidification season or more depending on water conditions in your area Approx dimensions 7 3/4" H x 8" ID x 10" OD x 1" Thick All product names, logos, brands, trademarks and registered trademarks are property of their respective owners. All company, product and service names used on this page are for identification purposes only. Discount Filters.com and National Trade Supply, LLC are not affiliated with these brands.