With Bionaire??? brand technology, you can live in harmony with nature for a serene home environment.- For medium-sized rooms up to 180 square feet- Remote control operation- ARM & HAMMER??? *(6) enhanced filter- Removes up to 99% *(4) of airborne pollutants as small as 2 microns, such as dust, pet dander and pollen- 3 speed settings- Optional ionizer enhances particle filtration- Filter change in