The BIG BLUE 8 inch is our most popular model. This polished stainless steel ozonator has 3 UV-C germicidal lamps. Each with its own high powered ballast. Adjustable ozone output; each bulb is individually controlled. This redundant fail-safe feature means you are never without odor control. Great for larger spaces and faster results in smaller spaces. This unit measures 20" X 8" in diameter. Recommended fan size of up to 800 cfm. The BIG BLUE 8 produces up to 2250 mg/hr.