*IMPORTANT SHIPPING NOTES: After adding correct lamps to your shopping cart please visit our "Shipping Fee Schedule for URI VHO Lamps" page for important information on shipping surcharge. The URI Actinic White lamp, 12,000K is the first of its kind to offer a 50/50 combination of triband (daylight) and actinic (blue) phosphors. This mixture provides a great balance between the life supporting spectrum required by live rock, corals, anemones, and related marine life, and the daylight spectrum required for vibrant color rendition. The 180 degree internal reflector allows for 40% more light output. The Actinic White Lamp has a kelvin temperature of 12,000. Excellent for all marine and reef applications. All URI lamps come with 180` internal reflector which allow 40% more light output. Available lamp Sizes: 24"(75W), 36"(95W), 46.5"(110W), 48"(110W), 60"(140W), 72"(160W).