18W 3000k 4ft LED Tube (Warm White) 18W LED Tube, G13 Base LED Module Encapsulated in Opal Glass Diffuser Cover Power Factor = 0.90 Lumen per Watt ≥100 Operating Temperature -20°C to 40°C Voltage : 100-240V Color Temperature : 3000K Average Life : 25,000 Hours Lumen Output : 1500lm ±10%