Green Element EVO 18"-22" LED Aquarium Light Fixture - Reef Capable 10x3W Dimensions - 17.00 x 5.00 x 1.00 Brackets add 0.65" in height Includes 10 LEDs 3 watt LED 1700 Lumen 7x 10000K LEDs 3x Actinic 460nm LEDs Slim and contemporary light design 2 mode on / off function for day and night use Extendable bracket - 18" - 22" max extend Extendable bracket - 45cm - 55cm max extend Non-corrosive powder coated aluminum housing 110V - 220V