The FF-0F4 Octa 4-Socket Fluorescent Fixture from Impact is a four Edison socket base that accepts CFL fluorescents up to 85W. Individual socket rating is 105 watts. The back panel has dual rocker switches, each of which control on/off function for two lights allowing the creation of a light ratio. The FF-0F4 has a multi-voltage power supply for worldwide use (with addition of optional adapter plug) and has a standard 5/8" receiver for light stands and accessories. The FF-0F4 is meant for use with the Impact FF-OSB60 24" Octa Softbox which is purchased separately, or with a standard photo umbrella that fits through the fixture's umbrella receptacle.