BeamsWork 48"-52" Single Bright Power LED Aquarium Light Fixture 800 Dimensions: 47.75 x 5.00 x 1.00 Brackets add 0.65" in height Includes 174 LEDs 900 Lumen Super energy efficient .1 watt LEDs 162x 6500K LEDs 12x Actinic 460nm LEDs Uses 18 watts Slim and contemporary light design 2 mode on / off function for day and night use Extendable bracket - 48"-52" max extend Splash guard