HQUA-TWS-12 Ultraviolet Water Purifier Sterilizer Filter for Whole House Water Purification, 12GPM 120V, 1 Extra UV Lamp + 1 Extra Quartz Sleeve. 12GPM 55W 21 inch long and 3.5 inch diameter. MNPT Inlet/Outlet: 3/4 Inch DN20. Smaller Size, Easier to Install and integrate into the pipe system. No chemical added to the water supply. No change in taste, odor, pH or conductivity nor the general chemistry of the water. 9000 hours Life of UV bulb. Efficiency sterilization: Disinfect 99.99% bacteria and viruses. Professional manual book are contained. Installation, maintenance, troubleshooting are easy to finish with that. Make sure you read all important parameters before purchasing. Including the size of in/outlet, the size of the chamber, wattage, flow rate… Hot Water Out Put Warning:The water in the chamber of this equipment can be very hot(Approx 140F)during an extended periods of no water flowing. It’s recommended to open the faucet until the hot water has been purged from your chamber. Keep your body away from the faucet during this time. To eliminate this condition, a temperature management valve can be installed at the outlet of your UV system. Package List: -304 Stainless steel chamber with 3/4 in/outlet. 2 uv bulbs with 4-pin end. 2 plastic brackets holder. Several o-rings use for sealing. Check your package with this list once you receive the package. We will send DOUBLE replacements of whatever you lost for free in next 3-5 workdays to help. CHECK YOUR BOOKLET in the package before you handle this system, Please! We will respond no more than 2 workdays. Pre-treatment: Water quality is extremely important for the optimum performance of your UV system. The following levels are recommended for installation: Iron. 75% Maintenance: Clean the quartz sleeve every 6-12 months, replace every 24 months. Replace UV lamp every 12 months to keep best sterilization performance. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. We usually respond within 24 hours on weekdays. Thank you for shopping at our store. The item “HQUA-TWS-12 Ultraviolet Water Purifier Sterilizer Filter for Whole House Water P” is in sale since Wednesday, September 15, 2021. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “aricy87″ and is located in Phoenix, AZ. This item can be shipped to United States.