Will house 3 Incandescent bulbs, and one 24" fluorescent bulb. The slider reptile hood accomodates spot or flood bulbs, as well as ceramic heat emitters in its vertically mounted sockets that are rated to handle up to 150 Watts. It also accomodates for a 24" fluorescent UV bulb making it a complete hood that will cover all of your terrarium lighting needs. Each socket/fixture has it's own rocker switch for independant light selection. Other features include an aluminum light reflector, and an innovative internally grounded receptacle for rock heaters, waterfalls, or other in tank accessories. Measures 36" long and 12" wide.