Holmes HAP726-U True HEPA Allergen Remover for Medium to Large Rooms is up to 99.97% efficient in removing allergens such as pollen, dust, mold, pet dander and smoke from the air passing through the filter. It also helps fight common household odors with the power of Arm & Hammer Baking Soda. True HEPA filtration removes up to 99.97% of airborne allergens from the air that passes through the filter; Arm & Hammer-enhanced filter helps eliminate common household odors. BONUS set of carbon filters included; Digital display with timer, which allows to automatically run the air cleaner for up to 16 hours; Filter monitors alert you when filter changes are needed to maintain maximum performance; Four speed settings provide options for different conditions; Dual position the unit can be placed either vertically or horizontally to best fit in your room; Color: White; Recommended for use in rooms up to 256 sq. ft.; Smoke CADR: 168; Dimensions: 17.730" x 9.260" x 18.680"; Weight: 17.110 lbs