Satco Fluorescent Tube T8, 25W, 2400 Lumens, 30/CT, White (SDNS8440) Case of 30Surround yourself in a cool, white light with this energy efficient, 25 watt fluorescent bulb. Designed for both residential and commercial use, this T8 fluorescent bulb is capable of producing 2,400 lumens for 30,000 hours. 120 volt fluorescent bulbs are 48" in length and use medium bi pin sockets. With a rating of 4,100 Kelvin and a CRI of 85, these fluorescent bulbs are ideal for creating a natural setting. TCLP compliant and meets RoSH standards.