Rainfresh Ultraviolet (UV) Water Disinfection System Provides safe drinking water for home, cottage/cabin, farm, business by killing / inactivating disease causing bacteria (E. coli) and water-borne viruses from untreated sources such as wells, lakes and rivers Designed for whole house protection - 12 US gpm maximum flow rate Non-chemical, environmentally friendly Operates 24/7 to provide continuous protection Audible and visual LED lamp expiry indicator with 7-day override feature 45 LPM 3/4" MPT inlet / outlet Includes UV lamp, quartz dome, UV ballast, stainless steel chamber & mounting hardware (does not include pipe or fittings) Installs easily in 60-75 minutes on main cold water line - easy-to-follow instructions for do-it-yourself installation included (Note: install on a dedicated, surge protect electrical circuit) Easy access for lamp changes and sleeve cleaning - no tools required Pre-filter sold separately Tested and certified by CSA International to NSF/ANSI61 and CSA B483.1