Modern T5 aquarium double light bar with electronically ballast (not dimmable) for two fluorescent lamps with 16 mm diameter (T5 technic) for aquarium covers, as replacement lamp or for increasing the lightingt of your aqaurium.Aqua Light Aquarium Double Light Bar T5+ for two fluorescent lamps T5 (16 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 24 W, length: 63.5 cm2x 39 W, length: 93.5 cm2x 54 W, length: 122.5 cm2x 80 W, length: 152.5 cm