T4 Fluorescent Light Fixture Wattage-Length: 6W-257mm, 8W-339mm, 12W-441mm, 16W-486mm, 20W-531mm, 22W-735mm, 24W-871mm, 26W-1,022mm, 28W-1,171mm. Voltage: 110V/220V-240V. Frequency: 50Hz/60Hz. Color Temperature: 2,700K/4,000K/6,400K. With high quality Tri-color Tube. Life Time: 8,000 Hours.