MODEL: HDF4UM-1 Wattage Available 13W 15W 18W 20W 23W 26W Length of Lamp 126mm 136mm 146mm 156mm 166mm 176mm Length of Tube 50mm 60mm 70mm 80mm 90mm 100mm Luminous Flux 780lm 900lm 1080lm 1200lm 1400lm 1550lm Voltage 110-130V/220-240V Color Index 80Ra Diameter of Tube 9mm Diameter of Whole Tube 39mm Diameter of Lamp 48mm Lamp Base E14 Lifetime 6000/8000hrs Color Temperature 2700/4100/6400K Carton Size 50X25.5X38.5cm/100pcs G.W./N.W. 11/9kgs Min.Qty.in 1x20'FCL 57,000pcs Min.Qty.in 1x40'HQ 138,500pcs