Twinstar LED aquarium light utilize RGB LED technology to enhance the coloration of aquarium fish and decor. The Twinstar B-line retains Twinstars classic slim profile but with a throttled back output for less light-demanding fish or invertebrate systems and low-medium light planted aquarium. B-line is equipped with adjustable style legs and is compatible with all rectangle and cube shaped aquariums with a maximum rim thickness of 10mm (0.39 inches). The adjustable legs can extend the light an additional 4 inches on either side. 30B (12"-20", 679 Lumens, 9 Watts), 45B (18"-26" 1217 Lumens, 16 Watts), 60B (24"-32" 1741 Lumens, 22 Watts), 90B (36"-44" 3166 Lumens, 42 Watts).