Used. The Novaerus NV900 Protect 900 Portable Medical Air Disinfecting Purification System is a high-quality air purifier designed for whole-room use. With a sleek white design and a compact size (4.5 inches in depth, 14.4 inches in height, and 14.37 inches in width), this UL-listed system is perfect for improving indoor air quality in any home or living space. The Novaerus NV900 model features a powerful 155 CFM fan for efficient purification and disinfecting, making it a reliable and efficient solution for maintaining clean and healthy air in your environment.