This is a complete fixture not a retrofit, it has 2 96Watt Power Compact bulbs 36" long and 7 " wide. Its been used for about 4 months. Comes with the bulbs 1 blue and 1 daylight. Dual swithes for independent operation. Housing is grey ABS and acrylic spalsh shield. Its in absolutly perfect condition its been used over a covered tank. Asking $175.00 Prefer Pick up but shipping really wouldnt be a problem but you pay shipping costs. I Live in NYC the zip is 11357 if you have to calculate shipping costs.