ENJOY CLEANER, FRESHER AIR The Bell & Howell® Ionic Whisper uses negative ion technology to quickly remove airborne pollutants, odors and fumes, leaving you with fresher, cleaner, healthier air. The built-in filter removes pet dander, pollen and other allergens. 2 speeds: Whisper Silent™ and Turbo. Permanent filter easily rinses clean and never needs replacing. Includes AC adapter. 12”H.