Oreck rair12gu Proshield Plus Air Purifier, X-Large Dimensions: 18 Inch long x 11.2 Inch deep x 4.5 Inch tall Remote control requires CR2025 battery for operation (included) Absorbs odors using ultraviolet light (UV-A) and never needs to be replaced Three speed settings, including Silence Permanent filter captures bacteria, allergens, viruses, mold, germs and never needs to be replaced