Modern T8 aquarium double light bar with electronically ballast (not dimmable) for two fluorescent lamps with 26 mm diameter (T8 technic) for aquarium covers, as replacement lamp or for increasing the lightingt of your aqaurium.Aqua Light Aquarium Double Light Bar T8+ for two fluorescent lamps T8 (26 mm)+ aluminium housing, holder on both sides+ splash water proof IP 67+ with modern electronically ballast, flicker-free, without starter+ dimensions profile: 27x43 mm+ lamp width: 31.5 cm+ lamp height: 5 cm+ without tubes+ available in different lengths/wattages:2x 15 W, length: 52.5 cm2x 18 W, length: 67.5 cm2x 30 W, length: 98.0 cm2x 36 W, length: 128.5 cm2x 38 W, length: 113.5 cm2x 58 W, length: 158.5 cm