Physical characteristics Socket type g13 socket Tube housing aluminum bracket, milky pc cover (integrated design) Lifespan > 30, 000hrs Electrical characteristics Input voltage ac 220v Lamp wattage 16w Frequency 50/60hz Photometric characteristics Lumen flux: 1200lm (white) Color temperature 6000k-6500k (white) Beam angle 120¡ã Color rendering index > 70 Operating temperature -40~45¡ã c Size¡êo 33x33x1210 4ft t8 led tube 50 pcs/carton