Go Fan Yourself (GFY) is proud of the patented technology utilized in the Ray-Air UV-C. These fans (resembling a ceiling tile) make spaces safer, more energy efficient, healthier and more comfortable, according to a representative for the company. Testing indicates that “Ray-Air UV-C sterilized over 99% of MS2 (Covid-19 & Influenza family of viruses) in only 90 minutes,” plus, it is UL certified safe to use while the space is occupied.