Pentair® BioShield 43" UV Sterilizer – 80W, 120–277V

Low-pressure, high-output UV sterilizer with a mercury vapor germicidal lamp for pools and spas. Converts roughly 40% of electrical input into germicidal UV-C light—the highest conversion among UV lamps—to effectively reduce bacteria and pathogens in water. Designed for reliable, energy-efficient water sterilization.