Designed to accommodate AgroLED® LED Tubes (T8 size) and T5 HO lamps (sold separately). Complete flexibility to mix & match different colored lamps for desired spectrum. Features the excellent color spectrum of LED's and the high output of T5 HO lamps. Energy efficient – LED lamps offer a typical power reduction of 20% or more. AgroLED® LED Tubes are 22 watts each and T5 HO lamps are 54 watts each. 120 volts only. Environmentally friendly. Cool operation allows closer placement to plants. Housing is made of heavy-duty white steel. Lamp configuration: 44 accommodates 2 LED tubes and 2 T5 HO lamps. 48 accommodates 4 LED tubes and 4 T5 HO lamps (sold separately).