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The Bionaire 911D Dual Air Humidifier HEPA Filter Replacement Cartridge is used in Bionaire Whole House humidifier models Bionaire W2, Bionaire W2S, Bionaire W6, Bionaire W6S, Bionaire W7, Bionaire W9, Bionaire W9H, Bionaire W9S, Bionaire W0305, Bionaire W0310, Bionaire 911D, and Bionaire 911DCS . It will also fit the Holmes 911D humidifier and Holmes 911DCS humidifier. The Bionaire 911D Dual Air Humidifier HEPA Filter Cartridge measures 9.5'' x 9.5'' x 2.0''.
The Bionaire 911D Humidifier HEPA micro-weave filter traps numerous air pollutants to help prevent them from entering your home. It also uses an activated carbon component to help remove odors.
For best results, the Bionaire 911-D humidifier filter should be changed at least once per season.