The Dynamic Germicidal UVC Lamp Model DYN-24180-12 is a whole house air purification system that installs directly into the central heating and cooling system ductwork or plenum. The DYN-24180-12 has one 12” lamp. With ultraviolet light, microwatts translate to effectiveness. The DYN-24180-12 with 12” lamp produces a high output of 150 microwatts. 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. The UVC lamp must be replaced every 2 years.