Powerful, yet compact UV system with pre-filtration designed for the larger home or light commercial application, for flow rates up 18 gpm (70 lpm). Benefits: Pre-Filter Solution: Adds integral 5 micron pre-filtration module to the VH410 UV system. Ease of Maintenance: Audible lamp replacement reminder and countdown timer with digital display. Controller will also go into alarm if the lamp fails Convenient: Mounted on a reversible, heavy duty, painted steel bracket for installation flexibility Reliable: The constant current feature ensures stable UV lamp output, regardless of power fluctuations Space Efficient: High UV output lamp technology allows for a smaller footprint, while maintaining the same UV performance as a longer chamber Reliable: High-performance UV lamp, rigorously tested to provide consistent output over the entire lamp life (9000 hours) Application: Perfect for a wide range of whole-home, point-of-entry water treatment solutions in homes, cottages, or OEM applications The VH410-F20 inactivates the following microorganisms: Cryptosporidium, Giardia, E.Coli and Fecal Coliform.