The Field Controls UV-18 18" Duct Air Purifier is an in-duct air purification system designed for residential forced-air HVAC systems, including central heating and air conditioning equipment. It uses a high-intensity UVC lamp to treat circulating air, disrupting the DNA of microorganisms such as bacteria, viruses, mold, and fungi and preventing their reproduction. Installed within th... https://www.partshnc.com/field-uv-18-18-duct-air-purifier