T5 fluorescent lamp/energy saving lamp Features:1) watt: 8w (300mm), 14w(560mm), 21w (860mm), 35w (1450mm) 2) color temperature: 2700k, 3000k, 3500k, 4100k, 5000k, 6500k 3) lumen efficiency: 8w(310-500), 14w(1045-1220), 21w (1800-2100), 35w (3200-3450), 49w(4500-4700), 54w(4700-5000) 4) life: 8000hrs 5) used with a starter in 220v 50hz electricity Packing: 1pc/sleeve, 25pcs/carton Packing: 1pc/sleeve, 25pcs/carton