Enjoy the ADJ black light that has reflectors for extreme high output and measures at 24 inches. With it already being assembled with the tube and fixture its easy ready to be installed. Set the right mood with this light and never look back. Enjoy the ADJ black light that has reflectors for extreme high output and measures at 24 inches. With it already being assembled with the tube and fixture its easy ready to be installed. Set the right mood with this light and never look back.This 20W bulb and fixture were made to last you through many shows. Included as well is a 6 ft. cord so you have plenty of room to plug it in. With an on/off switch you can control when this light needs to be used. This awesome black light is one of the best of its kind, producing immense light for its price. The value of this bulb is unrivaled and will make you stand out.