Compact 316 stainless steel construction. 65mm Diameter x 350mm Long - Uses reliable USA made U/V Globe to sterilize up to 3 litres per minute of water.This unit is used usually under the sink in your house near the water filter.Kills harmful bacteria, moulds and some virus'. Absolutely ideal for the home and especially in remote areas and with water tanks on farms etc. Plastic Water Storage units.A water filter must be used in series with this unit to filter water before entering the U/V Light chamber. Globe life is 5000 Hours.