Hygeaire^® Germicidal Ultraviolet Indirect Air Disinfection Units purify the upper room air in occupied spaces in order to reduce the risk of cross infection and exposure of occupants to infectious airborne microbes. These fixtures are designed to project the ultraviolet rays across the upper room air, thereby destroying bacteria and viruses that are carried into the ultraviolet field by convection currents or air circulation. Replacement parts and accessories for the Atlantic Ultraviolet Corporation^® Hygeaire^® line of UV Fixtures are as follows: