F4T5 Fluorescent Light Bulbs
F4T5 fluorescent light bulbs are a very small linear type of fluorescent that are used in many applications including under cabinet, task lighting and any place where there is a small space. They are very trim they are only 5/8 of an inch in diameter and have two pins on each end. The length is 6 inches, so they are used everywhere because of the short size. These shouldn't be confused with the newer version T5 lamps which are out of the market for energy efficiency.