This cell is designed for the duct mounted 5,000 square foot Air Purifier and substantially reduces odors, visible smoke in the air, and treat contamination on surfaces. Available for 100 or 277 volt installation, it can be inserted into a duct or plenum as a low maintenance way to incorporate air treatment into HVAC systems, requiring no cleaning. Includes a UV bulb monitoring indicator. Covers up to 5,000 square feet.