Sun Blaze T5 HO 21 - 2 ft 1 Lamp comes with one pre-installed 6500°K (blue) T5 HO lamp which is by powered by high output ballast. The high output ballast is built for reliability and longevity. On/off rocker style switch mounted on the aluminum housing. 120 volts, standard plug power cord, 4 in chain jumper and mounting hardware included. Initial lumen output of 2000. Unit is 23.75" L x 1" W x 1.75" H. There is 1 year warranty with proof of purchase.