The Dynamic Germicidal UVC Lamp Model DYN-401H-12 is a whole house system that installs directly into the central heating and cooling system ductwork or plenum. The high-intensity Dual-Radiant™ UVC “H” Lamp disinfects the air by neutralizing airborne pathogens such as bacteria, viruses and mold. According to the EPA, the combined use of filtration and germicidal UVC light is an effective means of preventing the distribution of airborne viruses in occupied spaces.