UV Water Sterilizer, Size 1/2 In, MNPT Connection, Flow 2 GPM, Max. Hardness Less Than 7 gpg, Max. Iron Less Than 0.3 ppm, Max. Manganese Less Than 0.05 ppm, Suspended Solids Less Than 10 ppm, Hydrogen Sulfide Less Than 0.05 ppm, Voltage 100-130, Lamp Watts 17, Max. Pressure 125 PSI, Temp. Range 36-104 F, Exposure 30 mJ /cmĒ, Length 18 1/2 In., Width 2 1/2 In., Height 2 1/2 In.