Details About this item [High-Performance 3-Stage Filter & 360° Air Intake] The B-D02U air purifier has a high-performance 3-stage purification system, plus the 360° air intake design, can efficiently capture 99.97% of air particles from all around as small as 0.3 microns such as wildfire, smoke, pet hair, dander, dust, pollen, odors, etc. With coverage up to 1076ft², the air purifiers for home large room can relieve uncomfortable symptoms caused by air pollutants so that you can enjoy a clean a