Aquafine CSL 20R/60 ultraviolet disinfection unit with a flow rate of 430 gallons per minute for fresh water or 520 gallons per minute for RO/DI water. This unit takes 20 lamps and requires 118 volts, drawing 16 amps. Fittings are 4 inch raised face flange connections. Features include a self contained electrical cabinet, relative irradiance meters, lamp operational display lights and an hour meter showing 5100 hours. This unit includes used lamps and sleeves and are sold as is.