Leland White LED Grooved Track Head for Juno Track Systems 3 3/4&quot; high x 2 1/4&quot; wide. Extends to 5 1/2&quot; when aiming straight down. Integrated LED: uses 8 watts to produce a 560 lumen light output, comparable to the output of a 50 watt halogen. 2700K color temperature. 80 CRI. Cree Xlamp LED grooved track head for Juno track lighting systems. White finish head with nickel finish arm; adjustable head and swivel arm. Dimmable to 10% with an electronic low voltage dimmer, or an LED rated dimmer.