Check the listing for details. Ultraviolet UV Light Lamp (16w) for UV Water Filter System. Color: Silver, Condition: New. Listed at 24.00 USD. UV Ultraviolet Light Lamp (16W) For Water Sterilization Systems The UV light completely kill bacteria and virus in the water through physical reactions. No chemicals involved. Consistent performance. Sterilization effectiveness will not decrease over time. It fits all our UV Sterilization systems (eBay item #323183729406). This UV light lamp is a replacement light bulb for 16w UV water sterilization system. It has to be installed inside a transparent container that isolates it from water. The light lamp itself is not water proof. It can't touch water at any time. Size: 13.5" long excluding legs Note: UV light will consistently sterilize your water. But the input water quality may vary over the time. If this system is the only treatment for your drinking water, please test the output water regularly by professional water quality labs to make sure it is safe for drinking. Since there may be many different kind of risks in the untreated water supply, this system alone can't guarantee the safeness of the water it produces if its input water is not from a tested drinkable water resource. Matching 110 Volt 16 Watt Ballast: eBay item #326000874996 Shipping: This item is shipped by USPS. Usually 3 - 5 business day delivery including handling time.