This 2 Pack 6 Watt Replacement Bulbs F6T5/BL Fluorescent Tube G5 Base 9 inch Full Length Replacement is perfect for models DT2000XL, DT2000XLP, and DT3012. It comes with two 6-watt UV bulbs and is designed to last up to 3,000 hours (approximately every 4 months). This replacement bulb is easy to install and provides a bright, long-lasting light. It is perfect for any home or office and is sure to provide the best results. Get your replacement bulbs today and enjoy the bright, long-lasting light.