Sun Blaze T5 HO 41 - 4 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 daisy chain jumper and mounting hardware included. Daisy chain up to 5 fixtures off of one power supply cord. Initial lumen output of 5000. Unit is 47.5" L x 1" W x 1.75" H, uses 54 Watts. There is 1 year warranty with proof of purchase.