Pack of 2 HWF64 Holmes?? Sunbeam?? & Bionaire Humidifier Replacement Filters. Aftermarket replacement filters manufactured by FilterBuy.</br>Designed to fit Holmes?? Bionaire?? and Sunbeam units requiring filter type B.</br>This humidifier filter is designed to prevent growth and migration of mold?? fungus?? algae?? and bacteria.</br>Premium aftermarket replacement?? designed by FilterBuy in the USA.</br>Humidifier FilterBuy: Breathe Better!</br></br>Product Description</br></br><p> Pack of 2 filters designed to fit HWF64 Holmes?? Sunbeam?? and Bionaire humidifier models requiring filter type B. </p> <p> Dimensions are approximately 6 1/2"" ID x 6 1/2" OD x 1" Thick. </p> <b> <p> The FilterBuy replacement filter for HWF64 Wick Filters is designed to prevent any type of growth of mold?? fungus?? algae?? and bacteria. </p> <p> Premium aftermarket replacement filter designed by FilterBuy in the USA. </p> <p> Humidifier FilterBuy: Breathe Better! </p> </b></br><br/>http://www.amazon.com/gp/product/B015BQ94OAA USB Port