Prozone Water Products PZ2-4V Ozone System Generator for Commercial Pools PZ2-4V ozone system commercial pools up to 40,000 gallons features 4-Corona Hybrid Arc Tubes, 2-universal ballasts and Injector Bypass install kit PZ2-4V features 4-Corona Hybrid Arc Tubes and universal operating voltage 110-240V; Venturi allows maximum mixing for superior water quality 110/240V 50/60Hz Universal; Plug:: 3-Prong Nema; Ozone Purity: 100%, no nitrogen byproducts; Arc Life (nominal): 20,000 hrs.; Operating Temp: 25F to 120F Install kit includes Prozone's Dynamic Venturi Injector, 1/2"ozone check valve, hose, hose clamps and adjustable saddle clamps Weight 25lbs