The Economy Radiant 8AC system comes complete with a Radiant 8 inch air cooled reflector, Xtrasun ballast and standard high pressure sodium bulb. Radiant Air Cooled Reflectors are super sized air-cooled lens units based on the popular high performance Radiant Reflector. High efficiency design with a premium European specular insert means more light from the coolest running fixture ever offered by Hydrofarm. The reflector comes with a 25 year warranty. It also includes a hinged safety lens and mounted socket set. The reflector measures 9.38 inches high x 21 inches wide x 25 inches long. The Xtrasun ballast is extremely efficient and reliable. It boast a 5 year warrant, the best in it's class. The standard HPS bulb comes with a 1 year warranty.