The UltraViolight Plus model 300 UVP combines two powerful air purification technologies--UltraViolight gericidal irradiation UVGI and photolysis--to combat and control potentially harmful contaminats. 
UVGI is a part of the spectrum of electromagnetic energy generated by the sun.  Germicidal UV has been widely used for more than 40 years in healthcare, food processing, and pharmaceutical facilities to actively "kill" bacteria and viruses by destroying their DNA.  Now this same microbial control technology is available to the homeowner.
In addition to UVGI the specially designed UltraViolight Plus lamps produce a controled amount of trivalent oxygen--also know as ozone--via an oxidation reaction known as photolysis.  In-duct oxidation reaction chamber.  Ozone provides increased effectiveness against molds and mold products over UVGI alone.  It also breaks down and destroys unpleasant odors.  (An ozone-free UltraViolight model is also available.)
The return-air-duct installation of the UltraViolight Plus central air purifier creates a "microbial kill zone" where it is needed most.  This location enables ozone to penetrate into the coil, drain pan, and other downstream HVAC ssytem components that are particularly susceptible to mold and fungal growth.  Return-air-duct mounting also allows the ozone to dissapate prior to entering the living space.
Unlike lamp units mounted on one side of the duct, the transverse mountiung of the extra long lamp ensures complete coverage across the entire duct, even in larger duct sizes up to 20 inches.  The UltraViolight Plus can be quickly installed by Clean Air into virtually any duct system whether metal, fiberglass duct board, or round pipe.
UltraViolight Plus models are independantly tested and certified by ETL to stringent UL standards.  State-of-the-art safety features include and electrical interlock switch that instantly deactivates the lamp if the protective cover is removed, to prevent any accidental eye or skin exposure to the UV emisisons.