The 2 pack of 20-watt Sylvania 22083 F20T12/D T12 linear tube features a vivid lumen output of 1,075 while producing a whiter, more natural color for either commercial or residential applications. It has a stark white color temperature of 6500K and an average life of 7,500 hours. This fluorescent tube is perfect for high or low installations and can help you save energy with a fluorescent ballast.