Aqua UV 80 Watt 2 inch UV Sterilizer Fresh Water Sterilizer: 2,200-4,400 gallons; Flowrate - 3,678 gph for 30,000 w/cm2SUP&gt; Fresh Water Clarifier: up to 9,000 gallons; ideal for water gardens Salt Water Sterilizer: up to 600 gallons; Flowrate - 1,226gph for 90,000 w/cm2SUP&gt; Dimensions: 39.5" X 10.5" X 2.5" Inlet: 2" slip, Outlet: 2" slip